JMdict: 2197810

無駄口を叩く 【むだぐちをたたく】

  1. [exp,v5k] to chatter pointlessly; to waste one's breath
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
無 Nothingness, None, Ain't, Nothing, Nil, Not ム, ブ な.い 4
駄 Burdensome, Pack Horse, Horse Load, Send By Horse, Trivial, Worthless ダ, タ
口 Mouth コウ, ク くち 1
叩 Strike, Beat, Kow Tow, Hit, Thrash, Criticize コウ たた.く, はた.く, すぎ