いきおふ 勢いを振るう Show inflections LinksSentence search for 勢いを振るうSentence search for いきおいをふるうKanji details for 勢 and 振Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'u' ending1. to wield power; to exercise authority Discussions Log in to talk about this word.