English Dictionary

insane

IPA（発音記号）

/ɪnˈseɪn/

形容詞

くだけた表現 俗語

Exhibiting unsoundness or disorder of mind; not sane; utterly mad. / Used by or relating to insane people. / Causing insanity or madness.

日本語の意味

精神が不健全な状態、正気でない、狂っている / 精神異常者に関連する / 狂気や精神異常を引き起こす

The doctor concluded that the defendant was insane and unable to stand trial.

医師は被告が精神に異常があり、公判に耐えられないと結論づけた。

意味（1）

Exhibiting unsoundness or disorder of mind; not sane; utterly mad.

What is the cause of insanity? Nobody can answer such a sweeping question as that, but we know that certain diseases, such as syphilis, break down and destroy the brain cells and result in insanity. In fact, about one-half of all mental diseases can be attributed to such physical causes as brain lesions, alcohol, toxins, and injuries. But the other half—and this is the appalling part of the story—the other half of the people who go insane apparently have nothing organically wrong with their brain cells. In post-mortem examinations, when their brain tissues are studied under the highest-powered microscopes, they are found to be apparently just as healthy as yours and mine. Why do these people go insane?

意味（2）

Used by or relating to insane people.

an insane hospital

意味（3）

Causing insanity or madness.

意味（4）

(informal) Characterized by insanity or the utmost folly; ridiculous; impractical.

an insane plan

意味（5）

(slang) Extremely good; incredibly amazing.

That guy is insane at FPS games.

more insane （ comparative ）

insaner （ comparative ）

most insane （ superlative ）

insanest （ superlative ）