むだぐち 無駄口をたたく Show inflections LinksSentence search for 無駄口をたたくSentence search for むだぐちをたたくSentence search for 無駄口を叩くKanji details for 無, 駄 and 口Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'ku' ending1. to chatter pointlessly; to waste one's breathOther forms無駄口を叩く 【むだぐちをたたく】 Discussions Log in to talk about this word.