ゆゆ 由々しき LinksSentence search for 由々しきSentence search for ゆゆしきSentence search for 由由しきKanji details for 由Edit in JMdict Noun or verb acting prenominally1. grave; serious; alarmingSee also 由々しいOther forms由由しき 【ゆゆしき】 Discussions Log in to talk about this word.