Explanation at your level:
You use certain when you are sure. If you know something is true, you are certain. It is like saying 'I am sure'. You can say, 'I am certain about the answer.' It helps you sound very clear when you talk to your friends.
At this level, you can use certain to talk about facts. 'I am certain that the bus arrives at 8:00.' You can also use it to talk about specific things, like 'a certain book' that you really like. It is a great way to show you are confident in what you are saying.
When you reach B1, you use certain to express degrees of belief. You might say, 'I am not certain if I can go.' This shows you are thinking about possibilities. It is also used to sound a bit more formal in emails or work situations, like saying 'I need to make certain that the report is finished.'
At the B2 level, you use certain to add nuance. You might describe someone as having a 'certain quality' or 'a certain way of speaking'. This shows you are observing details. It is also common in academic writing to say 'a certain number of people' to be precise without giving an exact count.
In advanced English, certain is used to frame arguments. You might write, 'To a certain extent, the theory holds true.' This allows you to be precise while acknowledging complexity. It is a sophisticated way to qualify your statements and show critical thinking in essays or debates.
At the mastery level, you appreciate the etymological roots of certain as 'fixed'. You might use it in literary contexts to describe an 'unsettling certainty' or a 'certain air of mystery'. You understand how it functions as both a marker of truth and a tool for creating subtle, specific references in complex prose.
30초 단어
- Used to express being sure.
- Used to identify something specific.
- Adjective form only.
- Commonly paired with 'of' or 'that'.
When you say you are certain, you are telling the world that your mind is made up. There is no room for doubt or 'maybe' in your statement. It is like standing on solid ground instead of shifting sand.
Beyond just feeling sure, we use certain to point to something specific without naming it directly. For example, if you say, 'I have a certain feeling about this,' you mean you have a specific hunch, even if you cannot quite put it into words. It is a very handy word for when you want to be precise but a bit mysterious.
The word certain has a long journey, traveling from the Latin word certus, which means 'fixed' or 'settled'. It moved through Old French before landing in English during the 13th century.
Think of it as a word that literally means 'to make something firm'. Just like a knot that is tied tight, being certain means your thoughts are tied down and not going anywhere. It is fascinating how a word that started as a way to describe physical objects became a way to describe our inner confidence.
You will hear certain used in two main ways. First, as a way to express confidence: 'I am certain he will arrive on time.' Second, as a determiner to highlight something specific: 'There is a certain charm to this old house.'
In formal settings, it sounds professional and decisive. In casual conversation, it adds a layer of depth to your descriptions. It pairs well with verbs like 'make' (make certain) and 'be' (be certain).
1. Make certain: To double-check or ensure something happens. 'Please make certain the door is locked.'
2. For certain: Used to express absolute truth. 'I know for certain that she is coming.'
3. A certain something: A quality that is hard to define. 'The painting has a certain something that draws you in.'
4. Certain as death and taxes: Something that is guaranteed to happen. 'The outcome is certain as death and taxes.'
5. To a certain extent: Partially. 'I agree with you to a certain extent.'
In British English, it is pronounced /ˈsɜːtn/, while in American English, it is /ˈsɜːrtn/. Notice the stress is on the first syllable. It rhymes with words like 'curtain' and 'certain' (which is a homophone in many accents).
Grammatically, it is an adjective that can come before a noun or after a linking verb like 'is' or 'was'. It does not have a plural form because it is an adjective, which makes it quite easy to use in sentences!
Fun Fact
It comes from the same root as 'certificate'.
Pronunciation Guide
Short, sharp sound.
R-colored vowel.
Common Errors
- Mispronouncing the 't' as a 'd'.
- Adding an extra syllable.
- Stressing the second syllable.
Rhymes With
Difficulty Rating
Easy to read
Easy to use
Easy to say
Easy to hear
What to Learn Next
Prerequisites
Learn Next
고급
Grammar to Know
Adjective usage
He is certain.
Determiners
A certain person.
Prepositional phrases
Certain of his success.
Examples by Level
I am certain.
I am sure.
Simple subject-verb-adjective structure.
I am certain about the time.
He is a certain type of person.
Are you certain?
I am certain it will rain.
She is certain of her choice.
We are certain they are here.
I am not certain yet.
Make certain you have your key.
I am certain that we can win.
There is a certain beauty in the rain.
She has a certain way of smiling.
I am certain of his success.
Make certain to call me later.
He is certain to be late.
To a certain degree, I understand.
I know for certain that he lied.
There is a certain irony in his words.
I am certain that the data is accurate.
She possesses a certain charm.
He is certain to succeed in his career.
We need to make certain that everyone is safe.
A certain number of students failed.
I am certain of my decision.
It is certain that things will change.
To a certain extent, the policy is flawed.
He spoke with a certain degree of authority.
There is a certain inevitability about the outcome.
I am certain beyond a shadow of a doubt.
She has a certain something that makes her unique.
The result is certain to be controversial.
We must make certain that no errors occur.
A certain silence filled the room.
The artist captured a certain melancholy in her portrait.
There is a certain gravitas to his performance.
His actions were a certain indication of his intent.
She felt a certain detachment from the event.
A certain ambiguity remains in the text.
He moved with a certain grace.
The plan is certain to be met with resistance.
There is a certain logic to his madness.
자주 쓰는 조합
Idioms & Expressions
"Make certain"
To ensure.
Make certain you finish your homework.
neutral"For certain"
Without doubt.
I know it for certain.
neutral"A certain something"
An indefinable quality.
She has a certain something.
casual"To a certain extent"
Partly.
To a certain extent, he is right.
formal"Certain as death and taxes"
Guaranteed.
It is certain as death and taxes.
idiomatic"Beyond a shadow of a doubt"
Totally certain.
I am certain beyond a shadow of a doubt.
formalEasily Confused
Both mean confident.
Sure is more common.
I am sure/certain.
Same root.
Certainly is an adverb.
I will certainly go.
Same root.
Certify is a verb.
I will certify this.
Same root.
Certainty is a noun.
There is no certainty.
Sentence Patterns
I am certain that...
I am certain that he is here.
I am certain of...
I am certain of the result.
A certain [noun]...
A certain man walked in.
Make certain to...
Make certain to call.
To a certain extent...
To a certain extent, it works.
어휘 가족
Nouns
Verbs
Adjectives
관련
How to Use It
8
Formality Scale
자주 하는 실수
Certain is an adjective; certainly is an adverb.
They are synonyms but 'sure' is more common in casual talk.
Use 'a certain' only with singular nouns.
Certain is an absolute adjective; use 'absolutely' instead of 'very'.
The adjective 'certain' is followed by 'of' when taking an object.
Tips
Memory Palace Trick
Imagine a stamp of 'CERTAIN' on a document.
When Native Speakers Use It
To sound more confident in meetings.
Cultural Insight
Often used in polite disagreement.
Grammar Shortcut
Certain + of + noun.
Say It Right
Don't over-pronounce the 't'.
Don't Make This Mistake
Don't use 'very' with certain.
Did You Know?
It shares a root with 'certify'.
Study Smart
Learn it with 'uncertainty'.
Professional Tip
Use it to sound firm.
Quick Rule
Certain is always an adjective.
Memorize It
Mnemonic
Cert-ain: I am CERTAIN about the CERTificate.
Visual Association
A seal of approval on a document.
Word Web
챌린지
Use 'certain' in a sentence about your day.
어원
Latin
Original meaning: Fixed or settled.
문화적 맥락
None.
Used often in business to show confidence.
Practice in Real Life
Real-World Contexts
At work
- I am certain about the data
- Make certain we meet the deadline
At school
- I am certain of the answer
- A certain number of students
Travel
- I am certain this is the right bus
- A certain hotel in the city
Daily life
- I know for certain
- I am not certain yet
Conversation Starters
"Are you certain about your plans for the weekend?"
"Do you think there is a certain way to learn English?"
"Are you certain that it will be sunny today?"
"Is there a certain book you love?"
"Can you be certain of anything in life?"
Journal Prompts
Write about a time you were certain of something.
Describe a certain person who influenced you.
What are you certain about regarding your future?
Why is it hard to be certain sometimes?
자주 묻는 질문
8 질문Yes.
No, use 'absolutely certain'.
Certainty.
Yes, mostly.
Yes.
It can be both formal and casual.
Sur-tin.
Uncertain.
셀프 테스트
I am ___ that it is sunny.
Certain means sure.
What does 'certain' mean?
Certain means you have no doubt.
Can you be 'certain' of a fact?
Yes, it means you are sure it is true.
Word
뜻
These are synonyms.
He is certain coming -> He is certain of coming (or He is certain to come).
To a ___ extent, I agree.
The phrase is 'to a certain extent'.
'Certain' can mean specific.
Yes, 'a certain person' means a specific person.
Which is a synonym for 'ascertain'?
Ascertain means to discover for sure.
He spoke with a ___ air of mystery.
Used to modify the noun phrase.
'Certain' comes from Latin 'certus'.
Correct, it means fixed or settled.
점수: /10
Summary
Certain means you are sure of a fact or referring to something specific.
- Used to express being sure.
- Used to identify something specific.
- Adjective form only.
- Commonly paired with 'of' or 'that'.
Memory Palace Trick
Imagine a stamp of 'CERTAIN' on a document.
When Native Speakers Use It
To sound more confident in meetings.
Cultural Insight
Often used in polite disagreement.
Grammar Shortcut
Certain + of + noun.
예시
I am certain that I left my keys on the kitchen table.
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