Denshi Jisho — Online Japanese dictionary

口裏を合わせる くちうらをあわせる to arrange beforehand to tell the same story; to get the stories straight
Expression, Ichidan verb 
口うらを合わせる くちうらをあわせる to arrange beforehand to tell the same story; to get the stories straight
Expression, Ichidan verb 
口が酸っぱくなる くちがすっぱくなる to say the same thing over and over again; to talk until one is blue in the face
Expression 
口は禍の元 くちはわざわいのもと Out of the mouth comes evil
Expression, Idiomatic expression 
口角泡を飛ばす こうかくあわをとばす to engage in a heated discussion
Expression, Godan verb with su ending 
口から砂糖が出る くちからさとうがでる sickly sweet
Expression, Ichidan verb, Obscure term 
口角あわを飛ばす こうかくあわをとばす to engage in a heated discussion
Expression, Godan verb with su ending 
口が裂けても言えない くちがさけてもいえない (I) won't say anything no matter what; to be unwilling to tell even under threat
Expression 
口をすっぱくして言う くちをすっぱくしていう to say time and time again; to say till you're blue in the face
Expression, Godan verb with u ending 
口を酸っぱくして言う くちをすっぱくしていう to say time and time again; to say till you're blue in the face
Expression, Godan verb with u ending 
口中清涼剤 こうちゅうせいりょうざい mouth freshener; oral deodorant
Noun 
口辺単純疱疹 こうへんたんじゅんほうしん cold sore
Noun 
口頭による名誉毀損 こうとうによるめいよきそん oral defamation
Expression 
口では大阪の城も建つ くちではおおさかのしろもたつ easier said than done; if it's just talking you can even build Osaka Castle
Expression, Idiomatic expression 
口に蜜有り腹に剣有り くちにみつありはらにけんあり A honey tongue, a heart of gall
Expression, Idiomatic expression 

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