insane
gb/ɪnsˈeɪn/ us/ɪnsˈeɪn/
B1
英語
~ 1900
語義
0件の語義
adjective
informal
B1
property
1
Extremely foolish or unreasonable
Very silly or unreasonable; not making sense.
用法パターン：
[someone/something] is insane
よくある間違い：
Learners sometimes confuse this meaning with the medical sense of 'mentally ill', which is less common in everyday speech.
類義語
crazy (Common informal synonym; slightly more casual and versatile.)
|
ridiculous (Focuses on being absurd rather than irrational.)
対義語
sensible (Emphasizes sound judgment and reason, the opposite of foolishness.)
コロケーション
insane idea
|insane plan
|insane amount
|insane price
|insane speed
テーマ
emotions
|daily life
|communication
|core_vocabulary
例文
- That was an insane amount of money to spend on shoes.
- Driving that fast in the rain is insane.
- The plot twist in the movie was absolutely insane.
学習者向け例文
- It is insane to walk on the road at night without lights.
- That game was insane and very exciting.
- He paid an insane price for the watch.
adjective
B2
state
2
Having a severe mental illness
Having a serious mental illness that changes how someone thinks or acts.
用法パターン：
[someone] is insane
よくある間違い：
Learners often overuse this meaning in casual contexts where 'crazy' or 'ridiculous' would be more appropriate.
類義語
psychotic (Medical term referring to severe mental disorders involving loss of contact with reality.)
対義語
sane (Means having normal mental health and sound judgment.)
コロケーション
legally insane
|declared insane
|mentally insane
テーマ
health
|law
|emotions
例文
- The court found him legally insane at the time of the crime.
- She was diagnosed as insane after a long evaluation.
- They claimed he was insane and needed treatment.
学習者向け例文
- The man was declared insane by the doctor.
- She is insane and cannot take care of herself.
- The judge said he was legally insane.
adjective
informal
B2
property
3
Extremely impressive or exciting
Very exciting or amazing; hard to believe because it is so good or extreme.
用法パターン：
[something] is insane
よくある間違い：
Learners may confuse this with the negative senses of 'insane', but here it is positive slang for 'amazing'.
類義語
amazing (Highlights admiration without the informal exaggeration.)
|
incredible (Focuses on being hard to believe due to excellence.)
対義語
boring (Describes something dull and unexciting, opposite in emotional impact.)
コロケーション
insane performance
|insane talent
|insane skill
テーマ
emotions
|entertainment
|core_vocabulary
|communication
|arts_entertainment
例文
- The guitarist gave an insane performance last night.
- That roller coaster has some insane drops.
- Her cooking skills are absolutely insane.
学習者向け例文
- The show last night was insane.
- He has insane skills in basketball.
- The party was insane and fun.
文法
辞書形
insane
IPA
GB/ɪnsˈeɪn/
US/ɪnsˈeɪn/
音節・強勢
in - sane （2音節）
Stress on 2nd syllable (sane)
活用形
Adjective
- Base: insane
関連語
Core family
insanely
adverb
insanity
noun
Negative and opposite forms
表現
drive someone insane
1/dɹˈaɪv sˈʌmwˌʌn ɪnsˈeɪn/
idiom
informal
Make someone extremely annoyed or stressed
To make someone feel very annoyed, upset, or mentally tired.
例文
- The constant noise is driving me insane.
- Her endless questions were driving him insane.
go insane
1/ɡˈoʊ ɪnsˈeɪn/
fixed phrase
Become mentally ill or irrational
To become mentally ill or start acting in a very strange way.
例文
- He nearly went insane after months of isolation.
- She thought she would go insane if the noise didn’t stop.
insane asylum
1/ɪnsˈeɪn əsˈaɪləm/
fixed phrase
archaic
Old term for psychiatric hospital
An old term for a hospital where people with serious mental illness lived and got treatment.
例文
- In the past, many were sent to an insane asylum for life.
- The horror film is set in an abandoned insane asylum.
- The novel is set in an old insane asylum.
- In the early 1900s, many people were sent to insane asylums for minor conditions.