► 名詞気違い  [(2)きちがい]  [coll]    
meaning:  crazy  rank: 1☆ あいつは気違いだ ⇨ He is crazy, insane  
(☛ Recently considered politically inappropriate by some)More examples:- 彼の振舞いは気違い染みていた ⇨ His behavior was borderline insanity
 - 色気違いの女 ⇨ An oversexed woman. A nymphomania
 - 彼は気違いじみた叫び声を上げた ⇨ He screamed as if going insane