怪

I

かい【怪】

〔不気味で不思議なこと〕 a mystery; an enigma; a riddle; something strange [weird, inexplicable]; mysterious goings-on.

●日本近代史の怪 a mystery [a riddle, an enigma] of modern Japanese history

・古屋敷の怪 weird events [strange goings-on] in an ancient mansion.

II

かい-【怪-】

〔不思議な･不審な〕 mysterious; eerie; enigmatic; sinister; uncanny; weird.

●怪文書 ⇒かいぶんしょ

・怪現象 a weird [a mysterious, an uncanny] phenomenon

・怪事件 a strange [mysterious, curious] affair; 《口》 a funny business.