無駄口

むだぐち【無駄口】

¶～をたたくな

Stop your idle talk. ; Quit talking nonsense.

¶ → 無駄口をきかない

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むだぐち【無駄口】

(an) idle talk; prattle; tattle.

●お前は無駄口が多いぞ. 《口》 You're all talk. | You're all hot air.

●無駄口をきく[たたく] talk idly [nonsense]; say useless [irrelevant] things; tattle; 《英》 waffle

・無駄口をきかない save one's breath

・無駄口をやめなさい. Quit your idle talk.

・無駄口をたたいてないで仕事を始めろ. Save your breath and start working.