B1 adverb #8 most common 3 min read

thoroughly

Thoroughly means doing something completely and with great care.

Explanation at your level:

When you do something thoroughly, you do it very well. You do not miss any parts. If you clean your room thoroughly, it is very clean. You check everything.

You use thoroughly to say that you finished a job completely. For example, 'I thoroughly read the book' means you read every page. It shows you were very careful.

At this level, you can use thoroughly to show you put effort into a task. It is common to say 'I thoroughly enjoyed the party' to show you had a great time. It is a stronger way to say 'completely' or 'very much.'

Thoroughly is perfect for describing professional work. Use it when you want to emphasize that you checked for errors. 'The report was thoroughly researched' sounds very smart and professional. It shows you are reliable.

In advanced English, thoroughly often appears in academic or investigative contexts. It suggests an exhaustive process. You might say an argument was thoroughly refuted, meaning every part of the argument was proven wrong. It adds precision to your writing.

At the mastery level, thoroughly is used to denote a deep, comprehensive engagement with a subject. It implies not just completion, but a profound understanding. A 'thoroughly modern' approach or a 'thoroughly researched' thesis demonstrates a high level of intellectual rigor. It is a nuanced word that separates a superficial effort from one that is truly exhaustive.

Word in 30 Seconds

  • Thoroughly means doing something with complete care.
  • It is an adverb modifying verbs.
  • It is commonly used in professional and daily life.
  • It ensures nothing is left incomplete.

When you do something thoroughly, you are being the opposite of careless. It means you have taken the time to look at every single piece of a puzzle, every corner of a room, or every detail of a report. It is the gold standard for getting a job done right.

Think of it as the extra mile. If you just tidy up your desk, you might move things around. But if you clean your desk thoroughly, you wipe down every surface, organize your drawers, and throw away the trash. It implies a sense of completeness that leaves no room for error.

You will often hear this word in professional settings, like when a boss asks if you have thoroughly reviewed a contract. It is a very positive word because it shows that you are responsible, reliable, and detail-oriented. Using this word tells people that you care about the quality of your work!

The word thoroughly comes from the Old English word thurh, which literally means 'through.' Over time, it evolved into 'thorough' as an adjective, meaning 'passing through' or 'complete.' It is a cousin to the word 'through,' and they share the same Germanic roots.

Historically, to do something 'thoroughly' meant to go through the entire thing from start to finish. It wasn't just about speed; it was about the journey of checking every part. In Middle English, the word was often spelled as 'thorughly,' reflecting its connection to the idea of moving through an object or process.

It is fascinating how language evolves. While 'through' is a preposition describing movement, 'thoroughly' became the adverbial way to describe the quality of that movement. It has remained a staple in English for centuries, consistently representing the idea of being complete and exhaustive in one's actions.

You can use thoroughly in almost any context, from casual chats to formal business meetings. It is a versatile adverb that modifies verbs. Common collocations include thoroughly enjoyed, thoroughly checked, and thoroughly researched.

In a formal register, it is excellent for reports or academic writing. For example, 'The data was thoroughly analyzed.' It adds weight and credibility to your statement. In casual conversation, you might say, 'I thoroughly enjoyed that movie,' which sounds a bit more polished and enthusiastic than just saying you liked it.

Be careful not to use it where 'completely' or 'totally' might be more natural, though they are often interchangeable. 'Thoroughly' is best reserved for actions that require effort, care, or investigation. It implies that a human agent was involved in the process of ensuring completeness.

While 'thoroughly' is a direct adverb, it appears in many expressions about being careful. 1. Leave no stone unturned: To search thoroughly for something. 2. Dot the i's and cross the t's: To be thorough with small details. 3. Go over with a fine-tooth comb: To examine something very thoroughly. 4. Get to the bottom of it: To investigate until the full truth is found. 5. Cover all the bases: To deal with every part of a situation.

Thoroughly is an adverb formed by adding the suffix '-ly' to the adjective 'thorough.' It is pronounced ˈθɜːrəli in American English and ˈθʌrəli in British English. The stress is on the first syllable.

It is commonly used before a past participle (e.g., thoroughly cleaned) or after a verb (e.g., he researched the topic thoroughly). It does not have a plural form, as it is an adverb. Rhyming words include sorrily and boringly, though these are less common in usage.

Fun Fact

It shares the same root as the word 'through'!

Pronunciation Guide

UK ˈθʌrəli

Sounds like 'THU-ruh-lee'.

US ˈθɜːrəli

Sounds like 'THUR-uh-lee'.

Common Errors

  • Mispronouncing the 'th' sound
  • Adding an extra syllable
  • Stressing the wrong part

Rhymes With

sorrily boringly horribly floridly morally

Difficulty Rating

Reading 2/5

Easy to read.

Writing 2/5

Easy to use.

Speaking 2/5

Easy to pronounce.

Listening 2/5

Easy to hear.

What to Learn Next

Prerequisites

through careful work

Learn Next

meticulous exhaustive comprehensive

Advanced

rigorous scrupulous

Grammar to Know

Adverb placement

He ran quickly.

Past participles

The book was read.

Suffixes

Quick + ly = quickly.

Examples by Level

1

I cleaned my room thoroughly.

I / cleaned / my room / completely.

Adverb after verb.

2

She washed the dishes thoroughly.

She / washed / the plates / very well.

Adverb after object.

3

Please read this thoroughly.

Please / read / this / carefully.

Imperative sentence.

4

He checked the bag thoroughly.

He / looked inside / the bag / well.

Past tense verb.

5

The dog is thoroughly tired.

The dog / is / very / tired.

Adverb modifying adjective.

6

We enjoyed the trip thoroughly.

We / liked / the trip / a lot.

Adverb at end.

7

Study the map thoroughly.

Look at / the map / carefully.

Imperative.

8

She prepared thoroughly.

She / got ready / very well.

Adverb modifying verb.

1

I thoroughly enjoyed the movie.

2

They checked the car thoroughly before the trip.

3

Please wash your hands thoroughly with soap.

4

He explained the plan thoroughly.

5

She thoroughly cleaned the kitchen.

6

We discussed the problem thoroughly.

7

The teacher thoroughly reviewed the homework.

8

The house was thoroughly painted.

1

I was thoroughly impressed by his presentation.

2

The police thoroughly investigated the scene.

3

Make sure to stir the mixture thoroughly.

4

He was thoroughly confused by the instructions.

5

The team thoroughly prepared for the match.

6

She thoroughly researched her family history.

7

They were thoroughly exhausted after the hike.

8

The documents were thoroughly checked for errors.

1

The proposal was thoroughly vetted by the committee.

2

He is a thoroughly modern thinker.

3

The issue has been thoroughly debated in parliament.

4

She thoroughly dismantled his argument.

5

They were thoroughly prepared for any eventuality.

6

The software was thoroughly tested before release.

7

I thoroughly recommend this restaurant.

8

The area was thoroughly searched by the rescue team.

1

The candidate was thoroughly grilled during the interview.

2

The professor thoroughly deconstructed the literary text.

3

His theory was thoroughly debunked by peers.

4

The system underwent a thoroughly rigorous audit.

5

She thoroughly immersed herself in the local culture.

6

The evidence was thoroughly examined by the forensic team.

7

The plan was thoroughly thought through.

8

He was thoroughly disillusioned with the outcome.

1

The author thoroughly articulated the complexities of the era.

2

The artist was thoroughly committed to her craft.

3

The policy was thoroughly integrated into the framework.

4

He was thoroughly captivated by the symphony's complexity.

5

The historical record was thoroughly scrutinized.

6

Their methodology was thoroughly sound.

7

She was thoroughly convinced of his innocence.

8

The project was thoroughly executed from start to finish.

Common Collocations

thoroughly enjoy
thoroughly clean
thoroughly research
thoroughly check
thoroughly impressed
thoroughly exhausted
thoroughly confused
thoroughly prepared
thoroughly examine
thoroughly convinced

Idioms & Expressions

"Leave no stone unturned"

To do everything possible to find something.

The detectives left no stone unturned.

idiomatic

"Go over with a fine-tooth comb"

To examine very carefully.

I went over the contract with a fine-tooth comb.

idiomatic

"Dot the i's and cross the t's"

To pay attention to every detail.

Make sure you dot the i's and cross the t's.

idiomatic

"Cover all the bases"

To deal with every possibility.

We need to cover all the bases before we launch.

idiomatic

"Get to the bottom of it"

To find the truth after investigation.

I will get to the bottom of this mystery.

idiomatic

"In and out"

To know something very well.

She knows the business in and out.

idiomatic

Easily Confused

thoroughly vs Through

Similar spelling.

Through is a preposition; thoroughly is an adverb.

I went through the door vs I checked it thoroughly.

thoroughly vs Though

Similar look.

Though is a conjunction (meaning 'although').

I went, though I was tired.

thoroughly vs Thought

Similar spelling.

Thought is the past of think.

I thought about it.

thoroughly vs Thorough

Same root.

Thorough is an adjective.

He is a thorough worker.

Sentence Patterns

A1

Subject + verb + thoroughly

She cleaned the room thoroughly.

B1

Thoroughly + past participle

The room was thoroughly cleaned.

A2

Be + thoroughly + adjective

I am thoroughly exhausted.

A2

Thoroughly + enjoy + noun

I thoroughly enjoyed the meal.

B2

Thoroughly + verb + object

We thoroughly researched the topic.

Word Family

Nouns

thoroughness The quality of being thorough.

Adjectives

thorough Complete and careful.

Related

through Root word

How to Use It

frequency

7

Formality Scale

Formal Neutral Casual

Common Mistakes

Thoroughlying Thoroughly
Thoroughly is already an adverb.
Very thoroughly Thoroughly
Thoroughly already implies a high degree.
Thoroughly fast Fast
Thoroughly doesn't describe speed.
Thoroughly good Very good
Thoroughly describes completeness, not quality.
Thoroughlying the work Doing the work thoroughly
Thoroughly is not a verb.

Tips

💡

Thor's Hammer

Imagine Thor hitting every detail with his hammer.

💡

Checklist

Use it when you finish a checklist.

🌍

Professionalism

Use it in emails to sound professional.

💡

Adverb Placement

Usually after the verb.

💡

The 'th' sound

Put your tongue between your teeth.

💡

Don't use it for speed

It is about quality, not speed.

💡

Root connection

It means 'through-ly'.

💡

Contextualize

Write 5 sentences about your day.

💡

Slow down

Practice saying the three syllables.

💡

Synonym swap

Replace 'very' with 'thoroughly' when appropriate.

Memorize It

Mnemonic

THOR-oughly: Like THOR, who does everything with great power and completeness!

Visual Association

A person using a magnifying glass to check every single inch of a room.

Word Web

Complete Careful Detail Exhaustive Reliable

Challenge

Try to say 'I thoroughly enjoyed my day' to three people today.

Word Origin

Old English

Original meaning: Through

Cultural Context

None.

Used often in work environments to show reliability.

Used in many formal business speeches.

Practice in Real Life

Real-World Contexts

Cleaning

  • thoroughly scrubbed
  • thoroughly washed
  • thoroughly dusted

Work/Study

  • thoroughly researched
  • thoroughly reviewed
  • thoroughly prepared

Feelings

  • thoroughly enjoyed
  • thoroughly confused
  • thoroughly impressed

Investigation

  • thoroughly examined
  • thoroughly checked
  • thoroughly investigated

Conversation Starters

"What is a task you like to do thoroughly?"

"Do you think it is better to be fast or thorough?"

"Have you ever thoroughly enjoyed a book?"

"When was the last time you checked something thoroughly?"

"Why is it important to be thorough in work?"

Journal Prompts

Describe a time you did a job thoroughly.

Why do some people struggle to be thorough?

Write about a project you want to research thoroughly.

How does being thorough change the outcome of a task?

Frequently Asked Questions

8 questions

No, it is an adverb.

Mostly with verbs that involve a process.

It is neutral and fits in most contexts.

Thorough.

No, it implies care, which often takes time.

Yes, very common.

No, use 'thorough' for a person.

It is spelled with both: T-H-O-R-O-U-G-H-L-Y.

Test Yourself

fill blank A1

I cleaned my room ___.

Correct! Not quite. Correct answer: thoroughly

Thoroughly describes how I cleaned.

multiple choice A2

Which means to do something with care?

Correct! Not quite. Correct answer: thoroughly

Thoroughly means being careful.

true false B1

Thoroughly means doing only half of a job.

Correct! Not quite. Correct answer: False

It means doing the whole job.

match pairs B1

Word

Meaning

All matched!

Matching synonyms and opposites.

sentence order B2

Tap words below to build the sentence
Correct! Not quite. Correct answer:

Subject + Verb + Adverb + Object.

Score: /5

Was this helpful?

Comments (0)

Login to Comment
No comments yet. Be the first to share your thoughts!