肝きもをつぶすConjugationMeanings1expression, godan verb (-su)be flabbergasted; be amazed; be astounded; be stunnedidiomatic expressionIdiomatic expression for being so surprised or shocked that one's composure is lost. Often used for sudden, unexpected events.突とつ然ぜんの知しらせに肝きもをつぶした。I was flabbergasted by the sudden news.