くちすべ 口が滑る Show inflections LinksSentence search for 口が滑るSentence search for くちがすべるSentence search for 口がすべるSentence search for 口が辷るKanji details for 口 and 滑Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'ru' ending1. to make a slip of the tongue; to let something slipOther forms口がすべる 【くちがすべる】、口が辷る 【くちがすべる】Notes口が辷る: Out-dated kanji or kanji usage. Discussions Log in to talk about this word.