頓とん着ちゃくTop 30000MeaningsNounSuru verbIntransitive verb1. being concerned about or mindful ofOther readings頓とん着じゃくKanji used頓immediate着wearPitch accentとんちゃくUsed in vocabulary無む頓とん着ちゃくindifferent; unconcerned; nonchalant; unmindful; inattentive; carelessNa-adjective