brain
gb/bɹˈeɪn/ us/bɹˈeɪn/
A2
英語
~ 1800
語義
0件の語義
名詞
A2
entity
1
Organ controlling thought and body
The part of your body inside your head that helps you think and control what you do.
用法パターン：
[someone]'s brain
よくある間違い：
Learners sometimes confuse 'brain' with 'mind'; 'brain' is the physical organ, while 'mind' is the thinking part or mental processes.
類義語
mind (Refers more to mental processes than the physical organ.)
対義語
body (Refers to the physical form excluding the head's controlling organ.)
コロケーション
human brain
|brain cells
|brain injury
|brain function
|brain activity
テーマ
science
|health
|anatomy
|body
例文
- The human brain is incredibly complex.
- He suffered a brain injury in the accident.
- Your brain needs rest to function well.
- Scientists are studying how the brain processes language.
学習者向け例文
- The brain helps us think.
- Her brain works very fast.
- He hurt his brain in the fall.
- My brain feels tired today.
名詞
B1
entity
2
Very intelligent person
A very smart person.
用法パターン：
[someone] is a brain at [something]
よくある間違い：
Learners may overuse 'brain' instead of 'smart person'; 'brain' in this sense is often used informally or in set phrases.
類義語
genius (Stronger and more formal; implies exceptional natural ability.)
対義語
fool (Someone lacking good sense or intelligence.)
コロケーション
creative brain
|the brains behind
|a real brain
テーマ
people
|intelligence
|education
|core_vocabulary
例文
- She's the brains behind the new project.
- He's a real brain when it comes to computers.
- We need some fresh brains on this problem.
学習者向け例文
- She is a brain in math.
- He is the brains of the team.
- My brother is a real brain.
名詞
informal
B1
entity
3
Mental ability to think well
How well someone can think and decide things.
用法パターン：
to have the brains to [do something]
よくある間違い：
Some learners confuse plural 'brains' with singular 'brain'; plural is common in idioms about intelligence.
類義語
intelligence (More formal and general; not slangy.)
対義語
stupidity (Lack of intelligence or good judgment.)
コロケーション
use your brain
|have brains
|no brains
テーマ
intelligence
|daily life
|education
|core_vocabulary
例文
- Use your brain before you act.
- He has the brains to run this company.
- They don't have enough brains to solve it.
学習者向け例文
- I use my brain to learn English.
- She has the brains to win.
- He does not use his brain.
文法
辞書形
brain
IPA
GB/bɹˈeɪn/
US/bɹˈeɪn/
音節・強勢
brain （1音節）
Stress on 1st syllable (brain)
活用形
Noun
- Base: brain
- Plural: brains
関連語
Forms
brains
noun
Core family
brainy
adjective
brainstorm
verb B2
Related words
Negative and opposite forms
brainless
adjective
Advanced or less common
brainchild
noun
brainwashing
noun C1
表現
brainstorm
1/bɹˈeɪnstˌɔɹm/
fixed phrase
Suggest many ideas quickly for problem-solving or creativity
To quickly think of many ideas with others to solve a problem or make something new.
例文
- Let's brainstorm ideas for the party theme.
- They brainstormed solutions during the meeting.
pick someone's brain
1/pˈɪk sˈʌmwˌʌnz bɹˈeɪn/
idiom
informal
Ask someone for ideas or advice
To talk to someone to get ideas or information from them because they know more about something.
例文
- Can I pick your brain about this design?
- He picked her brain for tips on starting a business.
rack your brains
1/ɹˈæk jˈʊɹ bɹˈeɪnz/
idiom
informal
Think very hard about something difficult
To try very hard to remember or think of something.
例文
- I've been racking my brains all day trying to remember her name.
- She racked her brains for a solution to the problem.
scatterbrained
1/skˈætɚbɹˈeɪnd/
fixed phrase
informal
Disorganized and forgetful mind
Not able to remember things or organize ideas well.
例文
- She's so scatterbrained she forgot her own birthday.
- I'm feeling scatterbrained after working all night.
the brains behind
1/ðə bɹˈeɪnz bɪhˈaɪnd/
idiom
Person who plans and directs something
The person who plans and controls an important project or activity.
例文
- She was the brains behind the marketing campaign.
- He's the brains behind our new app.