机不可失 jībùkěshī don't let an opportunity slip by Origin Definitions Defs Strokes Stroke Words Sentences Sents 机 機 jī noun opportunity (bound form) chance; opportunity; occasion不可 bùkě auxiliaryadjective cannot to be unable to; to be impossible失 shī verb to miss to miss; to let slip; to fail to seize something like an opportunity or chance