濃い口 こいくち Also written 濃口 Meanings の-adjective, Noun rich (taste); dark-coloured; thick; heavy Noun dark soy sauce See also: 濃口醤油 (こいくちしょうゆ). Kanji 濃 concentrated. Read as こい. 口 mouth. Read as くち. Jinuma: Japanese Dictionary · Word lists