ゆゆ 由々しい Show inflections LinksSentence search for 由々しいSentence search for ゆゆしいSentence search for 由由しいKanji details for 由Edit in JMdict I-adjective (keiyoushi)1. grave; serious; alarmingOther forms由由しい 【ゆゆしい】 Discussions Log in to talk about this word.