At the A1 level, 'prior' might seem like a difficult word, but you can understand it by thinking of the word 'before.' Imagine you are planning your day. You eat breakfast before you go to school. In a more formal way, someone might say 'prior to school.' At this very beginning stage, you don't need to use 'prior' yourself, but you might see it on signs or in simple instructions. For example, a sign at a swimming pool might say 'Shower prior to entering.' This just means you must take a shower first. Think of 'prior' as a special, fancy version of 'before.' If you see 'prior' in a sentence, look at what comes after it. That thing is the second thing to happen. The thing mentioned before 'prior' is the first thing. It's all about the order of things. 1, 2, 3. 'Prior' helps us know that something is number 1. You might also hear it when talking about time. 'Ten minutes prior' means ten minutes before now or before another time. Even though it's a big word, it has a very simple job: telling us what happened first. Just remember: Prior = Before. If you can remember that, you are doing great! Don't worry about using it in your own speaking yet; just try to recognize it when you see it in a book or on a sign. It's a useful 'secret' word that makes you look very smart when you understand it.
For A2 learners, 'prior' is a word you will start to see in travel and work situations. It's a step up from 'before' and is used when things need to be a bit more official. You might see it when booking a flight: 'Check in 2 hours prior to departure.' This means you need to be at the airport and checked in two hours before the plane leaves. It is also common in simple job advertisements. A shop might look for someone with 'prior experience in sales.' This means they want someone who has worked in a shop before they applied for this job. You can start using 'prior to' in your writing to make it sound a bit more professional. Instead of saying 'Before I came to England, I lived in Spain,' you could say 'Prior to moving to England, I lived in Spain.' It sounds very nice! Another place you'll see it is in rules. 'Prior permission is required' means you must ask for permission first. If you do something without asking, you didn't get 'prior permission.' So, at this level, focus on two things: 'prior to' (meaning before) and 'prior [noun]' (like prior experience or prior notice). It's a great word to help you organize your sentences when you are talking about your life history or making plans with others. It helps show that you are moving beyond basic English and starting to use more formal vocabulary.
At the B1 level, you should be comfortable seeing 'prior' in various contexts and even using it in your own formal writing. This word is very common in business English. If you have a 'prior commitment,' it means you already have a plan and cannot do something else. This is a very polite way to say 'no' to an invitation. 'I'm sorry, I can't come to the meeting because I have a prior commitment.' It sounds much more professional than just saying 'I'm busy.' You will also encounter 'prior' in more complex instructions. For example, 'Prior to starting the machine, ensure the safety guard is in place.' This is a common way to give safety warnings. You should also notice how 'prior' is used in the news. Reporters might talk about a 'prior agreement' between two countries, meaning an agreement that was made in the past and is still important now. At this level, you should also be aware of the noun form 'priors,' which you might hear in crime shows on TV. It refers to someone's past crimes. However, you should mostly focus on the adjective usage. A good exercise for B1 students is to take sentences with 'before' and try to rewrite them using 'prior to.' For example: 'Before the storm started, the birds flew away' becomes 'Prior to the storm, the birds flew away.' Notice how the sentence feels a bit more serious and descriptive. This is the power of using 'prior' correctly.
As a B2 learner, you are expected to understand the nuances of 'prior' and use it with precision. The definition provided—'existing or coming before in time, order, or importance'—is key here. At this level, you should recognize that 'prior' isn't just about time; it's about precedence. If something is a 'prior condition,' it must be satisfied before anything else can happen. This is common in legal contracts and academic theories. You should also be able to distinguish between 'prior' and its synonyms like 'previous' or 'preceding.' While 'previous' is general, 'prior' often implies a formal requirement or a significant historical fact. For instance, 'prior knowledge' is a specific term in education and psychology referring to what a student already knows before a lesson. In your writing, you should use 'prior to' to create more complex and formal sentence structures. Instead of simple chronological lists, use 'prior to' to link causes and effects. For example, 'Prior to the implementation of the new policy, staff turnover was high.' This shows a clear 'before and after' relationship. You should also be careful not to over-use the word; in a casual email to a colleague, 'before' is still perfectly fine. The mark of a B2 speaker is knowing when to use formal language like 'prior' and when to stick to simpler terms. You should also be able to handle the plural noun 'priors' in a legal context and understand the religious meaning of 'a prior' if you come across it in literature. Overall, 'prior' is a tool for adding sophistication and clarity to your professional and academic communication.
At the C1 level, your understanding of 'prior' should be deep and multifaceted. You should be able to use it in highly technical or abstract ways. For example, in the field of statistics or Bayesian logic, a 'prior probability' is a fundamental concept referring to the probability assigned to a hypothesis before any evidence is collected. This is a very specific, high-level use of the word. You should also be comfortable using 'prior' to denote importance or rank, not just time. A 'prior claim' on someone's attention or resources means that one thing is more important than another and must be dealt with first. In formal essays, you can use 'prior' to critique the work of others: 'The author fails to account for prior research in this area,' which is a sophisticated way of saying they didn't do their homework. You should also be sensitive to the stylistic implications of 'prior.' Using 'prior to' can sometimes be seen as 'clunky' if used too often, so a C1 speaker knows how to balance it with other transitions like 'beforehand,' 'previously,' or 'erstwhile.' You should also be aware of legal concepts like 'prior art' in intellectual property law or 'prior restraint' in civil liberties discussions. These aren't just vocabulary words; they are complex concepts that rely on the meaning of 'prior' to function. Your ability to use 'prior' correctly in these contexts shows a high level of cultural and professional literacy. You should also be able to use the word in its noun form (a Prior in a monastery) without confusion, recognizing it as a distinct, albeit related, meaning. At C1, 'prior' is no longer just a synonym for 'before'; it is a versatile term for establishing hierarchy, importance, and logical sequence in complex discourse.
For C2 mastery, 'prior' becomes a word used with absolute stylistic control. You understand its etymological roots (from the Latin prior, meaning 'former' or 'superior') and how that history informs its current usage. You can use 'prior' to create a sense of inevitable sequence or logical necessity. In philosophical discourse, you might discuss 'a priori' knowledge—knowledge that is independent of experience. While this is a Latin phrase, its use of 'prior' is central to the concept. You are also capable of identifying and avoiding the 'officialese' trap, where 'prior to' is used to mask a lack of clear thought. A C2 writer uses 'prior' when they want to emphasize the primacy of one event over another. You might use it to describe the 'prior conditions of existence' or other deeply abstract concepts. Your use of the word is seamless, whether you are writing a legal brief, a scientific paper, or a piece of literary fiction. You also recognize the subtle difference between 'prior' and 'anterior' in medical or technical contexts, and you never confuse 'prior' with 'prioritize' or use 'prior than.' Furthermore, you are aware of the word's place in the history of the English language, including its use as a title in religious orders and how that usage has evolved. In a C2 level conversation, 'prior' might be used to establish a logical baseline: 'Prior to our discussion on ethics, we must first define what we mean by value.' Here, 'prior' is used to set the boundaries of the intellectual inquiry. This level of mastery means the word is no longer a 'vocabulary item' but a precise instrument for shaping thought and expression at the highest levels of English proficiency.

prior in 30 Seconds

  • Prior is a formal adjective meaning 'coming before in time or order.' It is a sophisticated alternative to 'before' or 'previous' in professional writing.
  • The phrase 'prior to' functions as a preposition, linking an earlier event to a later one. It is common in instructions and official reports.
  • In legal contexts, 'prior' can refer to a person's past criminal record, and 'prior art' refers to existing knowledge relevant to a patent.
  • The word also has a noun form, referring to a high-ranking official in a monastery, though this usage is less common in daily life.

The word prior is a sophisticated term primarily used to indicate that something exists, happens, or comes before something else in time, order, or importance. While it is most commonly encountered as an adjective, it carries a weight of formality that makes it a staple in professional, legal, and academic environments. When you describe an event as being prior to another, you are establishing a clear chronological sequence, often implying a causal link or a necessary condition that must be met before the next step can occur. For instance, in a corporate setting, having prior approval means that the permission was secured well before any action was taken, ensuring that all protocols were followed. This word is not just about time; it is about the structural hierarchy of events. In a legal context, a prior conviction refers to a past legal judgment that influences a current case, showing how the past directly impacts the present. The versatility of 'prior' allows it to function as a standalone adjective or as part of the prepositional phrase 'prior to,' which acts as a more formal substitute for the word 'before.'

Temporal Precedence
This refers to the most common usage, where 'prior' indicates that one thing happened at an earlier point in time than another. It is used to set the stage for subsequent events.
Logical Priority
In philosophical or technical discussions, 'prior' can describe something that is more fundamental or must be understood before a secondary concept can be grasped.
The Noun Form
Though less common in everyday conversation, a 'prior' can also be a noun referring to a high-ranking officer in a religious house or monastery, usually ranking just below an abbot.

People use 'prior' when they want to sound precise and organized. It is frequent in scheduling, where a prior engagement serves as a polite and professional way to decline an invitation because you already have plans. In the realm of science and research, prior knowledge is the foundation upon which new experiments are built. Without assessing what was known prior to the current study, researchers cannot accurately measure progress. The word also appears frequently in the news, particularly regarding government actions or international treaties that rely on agreements made in prior years. It suggests a sense of continuity and history, bridging the gap between what has already occurred and what is about to happen. Using 'prior' instead of 'before' can elevate the tone of your writing, making it suitable for reports, essays, and formal correspondence. However, it is important to use it correctly to avoid sounding overly stiff in casual conversation. Understanding the nuances of 'prior' helps in navigating complex instructions, such as 'prior to assembly, ensure all parts are present,' which is a standard phrase in technical manuals. This word is an essential tool for anyone looking to master the art of clear, professional communication in English.

The defendant had no prior criminal record, which the judge considered during sentencing.

Please notify the office 24 hours prior to your appointment if you need to cancel.

The success of the project was due to the team's prior experience in the field.

We must address the prior concerns raised by the committee before moving forward.

The researcher reviewed all prior literature on the subject to identify gaps in knowledge.

Using the word prior correctly involves understanding its grammatical placement and the specific phrases it commonly inhabits. Most often, 'prior' functions as an adjective that precedes a noun. In this role, it modifies the noun by adding a temporal dimension. For example, 'prior arrangements' refers to plans made beforehand. You can use it to describe knowledge, experience, notice, or even a person's history. When you say 'I have no prior experience in coding,' you are communicating that your history before this moment does not include that specific skill. This structure is very common in job descriptions and academic requirements. Another major way to use 'prior' is in the phrase 'prior to,' which behaves like a preposition. This is used to link two events in time, where the event following 'prior to' is the later one. For example, 'Prior to the discovery of penicillin, many minor infections were fatal.' Here, the discovery is the anchor point, and everything before it is the focus. This usage is particularly effective in historical writing or technical documentation where precise timing is crucial.

As an Attributive Adjective
Placed directly before a noun: 'The prior owner of the house left some furniture behind.' It identifies which owner is being discussed based on their place in the timeline.
As a Prepositional Phrase
Using 'prior to' followed by a noun or a gerund: 'Prior to leaving, please lock the door.' This is a formal way to give instructions about what must happen first.
In Legal and Formal Nouns
In law, 'priors' (plural noun) can informally refer to previous criminal records. 'The suspect had several priors for theft.'

It is also useful to consider the negative or comparative use of 'prior.' While we don't usually say 'more prior,' we often compare 'prior' events with 'subsequent' ones. This pairing is vital in reports where you need to show development. For instance, 'The prior results were inconclusive, but the subsequent tests yielded clear data.' This contrast helps the reader follow the progression of your work. Furthermore, 'prior' can be used to indicate importance rather than just time. In some contexts, a 'prior claim' is one that takes precedence over others because it was established first or is deemed more significant. This is common in financial discussions regarding debt repayment or insurance claims. When writing, ensure that the noun following 'prior' is appropriate; words like 'commitment,' 'notice,' 'approval,' and 'knowledge' are its most frequent companions. By mastering these patterns, you can use 'prior' to create sentences that are both grammatically precise and professionally polished. Whether you are explaining why you can't attend a party or detailing the history of a scientific theory, 'prior' provides the necessary temporal framework to make your meaning clear.

All participants must sign a waiver prior to the start of the race.

The prior version of the software had several bugs that have now been fixed.

She was unable to attend the meeting due to a prior commitment.

If you spend any time in a professional environment, you will hear the word prior constantly. It is the language of the office, the courtroom, and the lecture hall. In business, it often appears in the context of scheduling and logistics. You might hear a manager say, 'We need to review the prior quarter's performance before we set the new budget.' Here, it refers to the three-month period that has just ended. It is also a staple in formal invitations or RSVP requests; 'Please respond by Friday, or at least three days prior to the event.' This usage ensures that everyone understands the deadline relative to the main event. In legal settings, the word is even more prevalent. Lawyers and judges use it to refer to 'prior art' in patent cases (meaning existing knowledge that might make a new patent invalid) or 'prior restraint' in constitutional law (referring to government action that prohibits speech or other expression before it can take place). These are highly specific terms where 'before' simply wouldn't carry the necessary legal weight.

News and Media
News anchors often use 'prior to' when reporting on the timeline of a crime or a political event: 'Prior to the announcement, there was much speculation in the capital.'
Academic Lectures
Professors use it to link concepts: 'You should have read the assigned chapters prior to today's lecture to fully understand the discussion.'
Travel and Transportation
In airports, you'll hear announcements like, 'Passengers should arrive at the gate 30 minutes prior to departure.'

Beyond these formal settings, you might encounter 'prior' in literature or historical documentaries. It helps historians establish a sequence of cause and effect. 'Prior to the industrial revolution, most people lived in rural areas.' This usage sets a grand stage for the changes that followed. Interestingly, the word also has a life in the world of religion, though this is less common for language learners to encounter. A 'Prior' is a title for a leader in certain monastic orders. While you won't hear this in a business meeting, you might see it in a historical novel or while visiting an old abbey in Europe. In modern slang or informal speech, you rarely hear 'prior' used correctly; instead, you might hear people say 'priors' when talking about someone's criminal history, a term popularized by police procedural TV shows. Whether it's a doctor asking about your 'prior medical history' or a pilot talking about 'prior flight paths,' the word is a signal that the information coming up is about the past and is relevant to what is happening right now.

The airline recommends checking in online at least 24 hours prior to your flight.

The witness testified that they had seen the suspect near the scene prior to the incident.

While prior is a useful word, it is also a magnet for certain types of linguistic errors, ranging from grammatical slips to stylistic blunders. One of the most frequent mistakes is the use of 'prior to' when a simple 'before' would be much better. This is often called 'wordiness' or 'officialese.' For example, saying 'I ate breakfast prior to going to work' isn't grammatically wrong, but it sounds unnecessarily stiff and robotic. In casual conversation, 'before' is almost always the better choice. Another common error is using 'prior' as a verb. People sometimes mistakenly say 'I need to prior this task,' thinking it's a shorter version of 'prioritize.' This is incorrect; 'prior' is an adjective or a noun, never a verb. If you want to say you are putting something first, the correct word is prioritize.

Redundancy
Avoid phrases like 'prior before' or 'prior in advance.' Since 'prior' already means before or in advance, adding those words is repetitive and redundant.
Incorrect Preposition
'Prior' must be followed by 'to' if it's being used as a preposition. Saying 'prior the meeting' is a common mistake for non-native speakers. It should always be 'prior to the meeting.'
Misplaced Adjective
Sometimes people use 'prior' when they mean 'former.' While similar, 'prior' usually refers to the immediate predecessor or a general past state, whereas 'former' is used to specifically contrast with 'latter.'

There is also the issue of 'priors' used as a noun. While it's common in police slang to say 'He has three priors,' in formal writing, you should use the full phrase 'prior convictions' or 'prior offenses.' Using the slang version in a formal essay would be considered a register error. Additionally, be careful with the phrase 'prior than.' This is a confusion with 'earlier than.' You should never use 'than' with 'prior.' It is always 'prior to.' For example, 'The results were received prior to the deadline,' not 'prior than the deadline.' Finally, watch out for the 'prior' vs. 'previous' distinction in very technical writing. In some computer science contexts, 'prior' might refer to a probability distribution before data is seen (a 'prior'), while 'previous' might just mean the one that came before in a list. Mixing these up in a technical paper can lead to confusion. By keeping these points in mind, you can ensure that your use of 'prior' is not only grammatically sound but also stylistically appropriate for the situation.

Incorrect: We need to prior these emails.
Correct: We need to prioritize these emails.

Incorrect: I finished prior than him.
Correct: I finished prior to him (or 'before him').

To truly understand prior, it helps to see how it fits into the family of words that deal with time and sequence. The most obvious synonym is previous. In many cases, they are interchangeable. 'The previous owner' and 'the prior owner' mean the same thing. However, 'previous' is often used for things that happened just before, while 'prior' can refer to anything in the past that is relevant to the present. Another close relative is preceding. This word is often used in a more literal, physical sense, such as 'the preceding chapter' or 'the preceding car in the convoy.' It emphasizes the order in a sequence. Then there is former, which is typically used when comparing two things (the former and the latter). If you have lived in two cities, New York and London, New York is the former city. You wouldn't usually call it your 'prior city' unless you were filling out a very formal government form.

Prior vs. Previous
'Prior' is slightly more formal and often used in legal or official contexts. 'Previous' is the standard choice for everyday storytelling and general descriptions.
Prior vs. Foregoing
'Foregoing' is an extremely formal, almost archaic word used in legal documents to refer to something that was just mentioned: 'The foregoing terms and conditions...' 'Prior' is much more common.
Prior vs. Past
'Past' is a broad term for everything that has already happened. 'Prior' is more specific, usually linking the past event to a specific point of reference in the future.

In more specialized fields, you might encounter anterior, which is used in anatomy and biology to describe something positioned at the front or occurring earlier. You wouldn't use this in a business meeting, but a doctor might use it when describing a part of the body. There's also antecedent, a formal word often used in grammar (the noun a pronoun refers back to) or logic (the first part of a conditional statement). Understanding these alternatives allows you to choose the word that best fits the 'register' or level of formality of your situation. If you are writing a casual email to a friend, 'before' or 'earlier' is perfect. If you are writing a legal brief, 'prior' or 'preceding' might be required. By expanding your vocabulary to include these nuances, you can communicate with greater precision and authority. Remember, the goal isn't just to know what a word means, but to know which word is the best tool for the job at hand. 'Prior' is a high-precision tool, best used when clarity and formality are paramount.

While 'previous' is common, using prior in a legal contract provides a more definitive tone of precedence.

The preceding paragraph discussed the causes; this one will focus on the effects.

How Formal Is It?

Formal

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Neutral

""

Informal

""

Child friendly

""

Slang

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Fun Fact

The religious title 'Prior' comes from the same root because the Prior was the 'superior' or 'first' among the monks in a house that was not an abbey.

Pronunciation Guide

UK /ˈpraɪ.ə(r)/
US /ˈpraɪ.ɚ/
The stress is on the first syllable: PRY-er.
Rhymes With
buyer fire higher liar tire wire flyer dryer
Common Errors
  • Pronouncing it as 'pree-or'.
  • Confusing it with 'prayer' (though they sound very similar).
  • Emphasizing the second syllable.
  • Dropping the 'r' sound in American English.
  • Merging the two syllables into one 'pryr' sound.

Difficulty Rating

Reading 4/5

Common in formal texts, easy to recognize once the 'before' meaning is known.

Writing 6/5

Requires care to avoid sounding too stiff or using 'than' incorrectly.

Speaking 5/5

Used mostly in professional settings; 'before' is more common in speech.

Listening 4/5

Clear pronunciation, though 'prior to' can blend together in fast speech.

What to Learn Next

Prerequisites

before first past early time

Learn Next

subsequent preceding consequent antecedent precedence

Advanced

a priori prioritize primacy primal primordial

Grammar to Know

Prior to as a Preposition

Prior to the storm (noun), we stayed inside. Prior to leaving (gerund), we locked up.

Adjective Placement

Always place 'prior' before the noun it modifies: 'prior notice,' not 'notice prior' (unless in specific poetic or legal phrasing).

No Comparative Form

Do not say 'more prior' or 'most prior.' Use 'earlier' or 'more fundamental' instead.

Prior vs. Before

Use 'prior to' for formal writing and 'before' for informal speaking.

The Noun 'Priors'

In legal slang, 'priors' is always plural when referring to a criminal record.

Examples by Level

1

Please wash your hands prior to eating.

Wash hands before food.

Simple 'prior to' + verb-ing.

2

Check the bus time prior to leaving.

Check the time before you go.

Using 'prior to' for a simple sequence.

3

Read the rules prior to the game.

Read first, then play.

Prior to + noun.

4

I saw him two days prior.

I saw him two days before.

Prior as an adverbial modifier of time.

5

Call us prior to your visit.

Phone before you come.

Imperative sentence with prior to.

6

Prior to sleep, I read a book.

Before bed, I read.

Starting a sentence with 'Prior to'.

7

She was here prior to me.

She arrived before I did.

Comparing arrival times.

8

The store was closed prior to 9 AM.

Not open before 9.

Prior to + specific time.

1

Do you have any prior experience in a kitchen?

Have you worked in a kitchen before?

Prior as an adjective modifying experience.

2

Prior to the flight, we had a coffee.

Before the plane left, we drank coffee.

Setting the scene with 'Prior to'.

3

I cannot come because I have a prior engagement.

I have another plan already.

Common formal phrase 'prior engagement'.

4

Please arrive 10 minutes prior to the meeting.

Come early.

Time measurement + prior to.

5

The prior owner of the car was very careful.

The person who had the car before.

Prior as an adjective for people.

6

Prior to the test, the teacher gave us some tips.

Before the exam, we got advice.

Formal sequence of events.

7

He had no prior knowledge of the surprise party.

He didn't know about the party beforehand.

Collocation: prior knowledge.

8

Prior to 2010, this building was a factory.

Before 2010, it was different.

Prior to + year.

1

The contract was signed prior to the start of the project.

The project began after the signing.

Passive voice with a temporal clause.

2

Prior to joining the company, she worked as a freelancer.

Her job before this one.

Prior to + gerund (-ing form).

3

We need to check if there is any prior art for this invention.

Existing inventions like this one.

Technical term: 'prior art'.

4

The candidate's prior work history was impressive.

The list of old jobs.

Possessive + prior + noun.

5

Prior to the storm, the city issued a warning.

The warning came first.

Formal reporting style.

6

He had several priors for minor offenses.

He had been in trouble with the law before.

Priors as a plural noun (informal/legal).

7

Prior to the update, the app was very slow.

The old version was bad.

Comparing states of being.

8

You must obtain prior written consent from the landlord.

Get a letter first.

Prior + adjective + noun.

1

The research builds upon a prior study conducted in 1998.

An earlier study is the foundation.

Academic usage of 'prior'.

2

Prior to the industrial revolution, most work was done by hand.

A major historical shift.

Historical time marker.

3

The court ruled that the evidence was obtained without a prior warrant.

No legal document was secured beforehand.

Legal/Formal usage.

4

She had a prior claim to the inheritance because of the will.

Her right was established first.

Abstract concept of precedence.

5

Prior to the discovery, scientists believed the planet was uninhabitable.

A change in scientific belief.

Prepositional phrase modifying a belief.

6

The company's prior success did not guarantee future profits.

Past performance vs. future results.

Adjective modifying an abstract noun.

7

All data must be backed up prior to the system migration.

Save everything before the change.

Technical instruction.

8

Without prior notice, the meeting was suddenly cancelled.

No one was told in advance.

Negative construction: 'Without prior notice'.

1

The philosopher argued that certain truths are prior to experience.

Existing before we sense them.

Philosophical 'a priori' concept.

2

The government's use of prior restraint was challenged in court.

Stopping publication before it happens.

Specific legal term: 'prior restraint'.

3

The Bayesian model requires the selection of an appropriate prior distribution.

A statistical starting point.

Statistical/Mathematical usage.

4

Prior to the advent of the internet, information was much harder to find.

The time before a major technology.

Formal 'advent' + 'prior to'.

5

His prior commitments as a CEO left him little time for leisure.

His roles took precedence.

Plural adjective usage.

6

The treaty was contingent upon the resolution of all prior disputes.

Old problems had to be fixed first.

Complex conditional sentence.

7

The architect studied the prior structures on the site for inspiration.

Buildings that were there before.

Describing physical history.

8

Prior to the 19th century, medicine was often based on tradition rather than science.

A long-term historical context.

Broad temporal marker.

1

The ontological argument posits a being that is prior to all other existences.

Existing fundamentally before everything.

Metaphysical usage.

2

The Prior of the monastery led the monks in their morning prayers.

The leader of the religious house.

Noun usage: Title.

3

In logic, the antecedent is prior to the consequent in a conditional statement.

Logical order of operations.

Logical/Formal usage.

4

The legislation was flawed because it failed to address the prior conditions of poverty.

The underlying, existing causes.

Sociopolitical analysis.

5

Prior to the linguistic turn in philosophy, focus was primarily on metaphysics.

A specific era in intellectual history.

Academic historiography.

6

The artist's prior works were characterized by a stark minimalism that he later abandoned.

Early career style.

Artistic critique.

7

The judge noted that the prior restraint of the press was a violation of the First Amendment.

A constitutional violation regarding censorship.

Constitutional law.

8

The concept of 'the prior' in machine learning refers to the initial belief before data is processed.

Initial state of an algorithm.

Cutting-edge technical usage.

Common Collocations

prior knowledge
prior experience
prior approval
prior notice
prior commitment
prior engagement
prior agreement
prior conviction
prior art
prior history

Common Phrases

prior to

— A formal way of saying 'before.' It links an earlier event to a later one.

Prior to the meeting, please read the report.

without prior notice

— Happening suddenly without anyone being told in advance.

The rules were changed without prior notice.

prior to the start

— Happening before something begins.

Check your equipment prior to the start of the race.

no prior experience

— Having never done a particular activity or job before.

The job is open to those with no prior experience.

prior to arrival

— Before getting to a specific destination.

Please fill out the form prior to arrival at the airport.

prior to departure

— Before leaving on a journey.

The plane was inspected prior to departure.

prior to completion

— Before something is finished.

The error was caught just prior to completion of the project.

with prior consent

— Having already received permission.

The data can only be shared with prior consent.

prior to that

— Before the event just mentioned.

He moved here in 2020; prior to that, he lived in Rome.

prior to launch

— Before a product or project is officially started.

The website was tested thoroughly prior to launch.

Often Confused With

prior vs previous

While similar, 'prior' is more formal and often implies a requirement or a logical sequence.

prior vs prioritize

This is the verb form. 'Prior' itself should never be used as a verb.

prior vs prayer

These words sound similar but have completely different meanings and spellings.

Idioms & Expressions

"priors"

— A person's previous criminal record or convictions.

The detective checked the suspect's priors.

Informal/Legal Slang
"a priori"

— Knowledge that comes from theory or logic rather than observation.

It was an a priori assumption that the plan would work.

Academic/Philosophical
"prior claim"

— A right to something that is stronger because it came first.

Family often has a prior claim on our time.

Formal
"prior restraint"

— Government action that prevents material from being published.

The court case centered on the issue of prior restraint.

Legal/Political
"prior art"

— Evidence that your invention is already known.

The search for prior art took several months.

Legal/Technical
"without prior warning"

— Doing something unexpectedly and without telling anyone.

The company closed the factory without prior warning.

Neutral
"prior probability"

— The initial estimate of the likelihood of an event.

We need to set the prior probability for the model.

Scientific/Statistical
"prior notice"

— Telling someone about something before it happens.

The landlord must give 24 hours' prior notice.

Formal
"prior engagement"

— A polite excuse for not attending something.

She declined the dinner due to a prior engagement.

Formal/Social
"prioritize"

— To treat one thing as more important than others (verb form).

We need to prioritize safety over speed.

Neutral/Business

Easily Confused

prior vs former

Both refer to the past.

Former is used when choosing between two items (the first one). Prior refers to anything earlier in time.

The former option is better than the latter.

prior vs preceding

Both mean coming before.

Preceding usually means the one immediately before in a physical sequence.

The preceding car stopped suddenly.

prior vs past

Both refer to earlier times.

Past is a general period of time. Prior is a specific relationship between two points.

In the past, we were friends. Prior to the fight, we were friends.

prior vs beforehand

Both mean 'before'.

Beforehand is an adverb (happening in advance). Prior is an adjective or part of a prepositional phrase.

I finished the work beforehand.

prior vs ahead

Sometimes people think 'ahead of' is the same as 'prior to'.

Ahead of can mean physically in front or earlier in time. Prior to is strictly temporal or logical.

He is ahead of me in the race.

Sentence Patterns

A1

Wash your hands prior to [noun].

Wash your hands prior to lunch.

A2

I have prior experience in [field].

I have prior experience in retail.

B1

Prior to [verb-ing], we [past verb].

Prior to leaving, we checked the map.

B2

The [noun] was [verb-ed] without prior [noun].

The decision was made without prior consultation.

C1

All prior [noun] must be [verb-ed].

All prior claims must be settled first.

C2

The concept is prior to [abstract noun].

The concept is prior to linguistic expression.

Formal

Due to a prior engagement, [subject] is unable to attend.

Due to a prior engagement, the Minister is unable to attend.

Legal

Subject to prior written consent.

Subletting is allowed subject to prior written consent.

Word Family

Nouns

Verbs

Adjectives

Related

How to Use It

frequency

Common in business, law, and academia; moderate in general speech.

Common Mistakes
  • Using 'prior' as a verb. I need to prioritize this task.

    Prior is an adjective. You cannot 'prior' something. You must use the verb 'prioritize.'

  • Saying 'prior than'. He arrived prior to the meeting.

    The word 'prior' is always followed by 'to,' never 'than.'

  • Using 'prior' in very casual speech. I saw him before the game.

    While not grammatically wrong, 'prior' sounds too formal for a casual chat with friends. 'Before' is more natural.

  • Confusing 'prior' with 'prayer'. We said a prayer. (vs) I had a prior job.

    These words sound similar but have no relation in meaning or spelling.

  • Redundant phrasing like 'prior before'. I finished the work prior to the deadline.

    Since 'prior' already means 'before,' adding 'before' is repetitive and unnecessary.

Tips

Formal Writing

When writing a business report, use 'prior to' instead of 'before' to establish a professional tone. It shows you are being precise about the timeline.

Always use 'to'

Never use 'prior' alone as a preposition. It must always be 'prior to.' For example, 'prior to the deadline' is correct, but 'prior the deadline' is wrong.

The 'No Priors' Rule

In job applications, if you have never done something before, say you have 'no prior experience.' This is the standard and most professional phrase.

Be Direct

If your sentence is already very long, use 'before' instead of 'prior to.' Adding extra syllables can make a complex sentence even harder to read.

Polite Refusal

If you can't attend a party, say 'I have a prior commitment.' It sounds respectful and implies that you would come if you didn't already have plans.

Citing Sources

When writing an essay, use 'prior studies' to refer to work done by other researchers before you. It shows you have done your background reading.

Notice Periods

In contracts, look for 'prior notice.' This tells you how much time you have to give before you can change or end the agreement.

Job Interviews

Talk about your 'prior roles' to describe your past work history. This sounds more organized than just saying 'my old jobs.'

Check the Clock

Always check how many hours 'prior to departure' you need to be at the airport. This phrase is used on almost every airline ticket.

Don't say 'Prior than'

It's a common mistake to mix up 'prior to' and 'earlier than.' Stick to 'prior to' and you will always be grammatically correct.

Memorize It

Mnemonic

Think of a 'PRI-son' record. A 'prior' is what you did before you got to the present moment, like a criminal record (priors).

Visual Association

Imagine a timeline with an arrow pointing backwards. The word 'PRIOR' is written over the past section of the arrow.

Word Web

Before Previous Experience Notice Knowledge Commitment Approval History

Challenge

Try to use 'prior to' three times in your next formal email or essay instead of using 'before.' Ensure the context is professional.

Word Origin

The word 'prior' comes from the Latin word 'prior,' which means 'former,' 'previous,' or 'superior.' It is the comparative form of 'prae,' meaning 'before.' It entered Middle English through Old French.

Original meaning: In Latin, it literally meant 'the one before' or 'the first of two.'

It belongs to the Indo-European language family, specifically the Italic branch via Latin.

Cultural Context

No major sensitivities, but 'priors' as a noun is specifically linked to criminal history and should be used carefully.

Highly used in formal documents, legal papers, and corporate communication in all English-speaking countries.

Prior restraint (US Supreme Court cases like Near v. Minnesota) The Prior of a monastery in 'The Name of the Rose' by Umberto Eco Prior knowledge in educational psychology (Jean Piaget's theories)

Practice in Real Life

Real-World Contexts

Job Interviews

  • prior experience
  • prior roles
  • prior achievements
  • prior to this position

Travel

  • prior to departure
  • prior to arrival
  • prior to boarding
  • prior booking

Legal/Contracts

  • prior notice
  • prior consent
  • prior agreement
  • prior convictions

Academic Writing

  • prior research
  • prior knowledge
  • prior studies
  • prior to the experiment

Scheduling

  • prior commitment
  • prior engagement
  • prior appointment
  • prior arrangements

Conversation Starters

"Did you have any prior experience in this field before you started your current job?"

"Prior to moving to this city, where did you live and what was it like?"

"Do you think it's important to have prior knowledge of a movie's plot before watching it?"

"What is the most important thing you do prior to starting a big project at work?"

"Have you ever had to cancel a plan because of a sudden prior commitment?"

Journal Prompts

Reflect on a time when your prior knowledge helped you solve a difficult problem unexpectedly.

Describe your daily routine prior to the pandemic and how it has changed since then.

Write about a goal you want to achieve and the steps you must take prior to reaching it.

Discuss the importance of prior experience versus a willingness to learn in a new career.

Think about a historical event. What were the prior conditions that led to that event happening?

Frequently Asked Questions

10 questions

Not necessarily. 'Prior to' is more formal. In most everyday writing and speaking, 'before' is actually better because it is simpler and more direct. Use 'prior to' only when you want a professional or official tone.

No, that is a common mistake. You should always use 'prior to.' For example: 'He arrived prior to the start,' not 'prior than the start.' If you want to use 'than,' use 'earlier than.'

No, 'prior' is an adjective or a noun. Many people mistakenly use it as a verb when they mean 'prioritize.' For example, you should say 'I need to prioritize this,' not 'I need to prior this.'

Prior knowledge is the information or understanding that a person already has about a topic before they start learning more about it. Teachers often check prior knowledge to see what students already know.

In crime shows, 'priors' is slang for 'prior convictions.' It refers to a person's past criminal record. For example: 'The suspect has three priors for robbery.'

Yes, 'prior' can mean coming before something else in importance. For example, a 'prior claim' is a claim that must be handled first because it is more important or was made earlier.

In a monastery or religious house, a 'Prior' is a monk who is in charge of the community. He is usually second in command to an Abbot.

It is pronounced like 'PRY-er.' It rhymes with words like 'buyer,' 'higher,' and 'fire.' The stress is on the first syllable.

While 'priorly' is sometimes used, it is generally considered non-standard or incorrect. It is much better to use 'previously' or 'beforehand' if you need an adverb.

Prior art is a legal term used in patent law. It refers to any evidence that your invention is already known to the public, such as an existing product or a published paper, which could stop you from getting a patent.

Test Yourself 180 questions

writing

Write a formal sentence using 'prior to' to describe a deadline.

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writing

Write a sentence using 'prior experience' in the context of a job application.

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writing

Rewrite this sentence using 'prior': 'I had a meeting before this one.'

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writing

Use 'without prior notice' in a sentence about a company policy change.

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writing

Write a sentence using 'prior knowledge' about a school subject.

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writing

Explain a 'prior commitment' in a polite email declining a dinner invitation.

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writing

Use 'prior to departure' in a sentence about traveling by plane.

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writing

Write a sentence about a 'prior owner' of a used car.

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writing

Use 'prior to the start' in a sentence about a sports event.

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writing

Write a sentence using 'prior' as a noun (referring to a monk).

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writing

Use 'prior research' in a sentence about a scientific discovery.

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writing

Write a sentence using 'prior to' followed by a gerund (-ing verb).

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writing

Use 'prior history' in a medical context.

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writing

Write a sentence about 'prior art' in a patent case.

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writing

Use 'prior to the invention' in a historical sentence.

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writing

Write a sentence about a 'prior claim' on someone's time.

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writing

Use 'prior to the update' in a sentence about a computer program.

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writing

Write a sentence using 'priors' to mean criminal history.

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writing

Use 'prior to the 20th century' in a sentence about social change.

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writing

Write a sentence about 'prior approval' for a business expense.

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speaking

Describe three things you do prior to going to sleep.

Read this aloud:

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speaking

Explain your prior work experience as if you were in a job interview.

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speaking

Talk about a major change in your life and what happened prior to it.

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speaking

Discuss the importance of prior knowledge when learning a new language.

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speaking

Roleplay declining a party invitation using the phrase 'prior engagement.'

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speaking

Give a set of instructions for a simple task using 'prior to' at least twice.

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speaking

Explain what 'prior notice' means to a friend who is renting an apartment.

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speaking

Discuss a historical figure and what they did prior to becoming famous.

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speaking

Talk about the benefits of checking the weather prior to a long hike.

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speaking

Explain why 'prior experience' is often listed in job advertisements.

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speaking

Describe a time you were surprised because you had no prior knowledge of an event.

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speaking

Discuss the concept of 'priors' in the context of a detective story.

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speaking

Explain the phrase 'prior to the start of the race' to a group of runners.

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speaking

Talk about something you learned recently that changed your prior beliefs.

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speaking

Discuss the necessity of 'prior approval' in a large corporation.

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speaking

Explain 'prior art' to someone who wants to file a patent.

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speaking

Talk about how you prepare 'prior to' a big exam.

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speaking

Discuss the role of a 'Prior' in a medieval monastery.

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speaking

Explain why 'prior history' is important for a doctor to know.

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speaking

Talk about a 'prior commitment' you had to cancel to do something more important.

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listening

Listen to the announcement: 'Passengers should arrive 30 minutes prior to boarding.' What time should they arrive if boarding is at 2:00?

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listening

A speaker says, 'I had no prior knowledge of the plan.' Did they know about it before?

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listening

A detective says, 'Check his priors.' What is he looking for?

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listening

In a news report: 'The agreement was reached prior to the deadline.' Was the agreement on time?

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listening

A manager says, 'We need prior approval for this.' Can they spend the money now?

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listening

A scientist says, 'This builds on prior research.' Is the research new or old?

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listening

A person says, 'I have a prior engagement.' Are they free to meet?

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listening

A lawyer mentions 'prior art.' What field are they likely discussing?

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listening

A guide says, 'Prior to the 1800s, this was a forest.' What is it now?

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listening

A professor discusses 'a priori' truths. Is he talking about experience or logic?

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listening

A doctor asks about 'prior history.' What does he want to know?

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listening

An announcement says: 'Check in prior to 9 PM.' Can you check in at 10 PM?

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listening

A witness says, 'I saw him prior to the incident.' Did they see him after?

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listening

A narrator says, 'The prior owner was a famous artist.' Who owned the house before?

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listening

A pilot says, 'Prior to takeoff, please fasten your seatbelts.' When should you fasten them?

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/ 180 correct

Perfect score!

Related Content

More Time words

adalterward

C1

A noun referring to the subsequent phase, state, or lingering consequence that follows a significant alteration or systemic change. It specifically denotes the period of adjustment or the residual effects resulting from a deliberate modification in structure or character.

advent

C1

The arrival or beginning of a significant person, event, or invention that changes society or a specific field. It is typically used to mark the start of a new era or the introduction of a major technological advancement.

aeons

C1

An indefinitely long period of time; an age. Often used in the plural to exaggerate how long something takes or how much time has passed.

afternoon

A1

The period of time between noon and evening. It usually starts at 12:00 PM and ends when the sun begins to set or when the workday finishes.

age

A1

Age refers to the amount of time a person has lived or an object has existed. It is also used to describe a particular period in history or a stage of life.

ago

A1

Used to indicate a point in time that is a specific distance in the past from the present moment. It always follows a measurement of time, such as minutes, days, or years.

ahead

B1

Ahead describes a position further forward in space or time than something else. It is used to indicate movement toward a destination or being in a more advanced state relative to others.

anniversary

C2

An anniversary is the annual recurrence of a date that marks a significant past event, ranging from personal celebrations like weddings to historical commemorations. It serves as a temporal marker used to honor, celebrate, or reflect upon the importance of an occurrence over the span of years.

annual

C2

To officially declare that a law, contract, marriage, or decision is legally void or invalid. It implies that the subject is cancelled in such a way that it is treated as though it never existed in the first place.

annually

C1

The term describes an action or event that occurs once every year. It is frequently used to denote frequency in reports, ceremonies, or natural cycles that repeat on a twelve-month basis.

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