決め込む;決めこむ;決込む;極め込む [きめこむ] /(v5m,vt) (1) to take for granted/to assume/to be convinced (that)/to jump to the conclusion (that)/(v5m,vt) (2) to pretend (to be)/to pose (as)/to fancy oneself (to be)/to feign (e.g. ignorance)/(v5m,vt) (3) to go through with (what one decided to do)/to persist in doing/to make up one's mind/EntL1254190/