口汚い くちぎたない Also written 口穢い Meanings い-adjective foul-mouthed; foul (language); abusive greedy; gluttonous Kanji 口 mouth. Read as くち. 汚 dirty. Read as きたない. Example sentences 腹を立てると彼はよく口汚くののしる。He often swears when he is angry. Jinuma: Japanese Dictionary · Word lists