于乎 yūhū alas Origin Definitions Defs Strokes Stroke Words Sentences Sents 于 於 wū exclamation of admiration or grief (archaic) An exclamation used to express admiration or grief; same as 乌 wū乎 hū [final particle] (classical) used at the end of a sentence to express interrogation, doubt, surmise, or exclamation; similar to 吗 ma or 啊 a