猛威を振るう;猛威をふるう;猛威を奮う(iK);猛威を振う(sK);猛威を揮う(sK) [もういをふるう] /(exp,v5u) to rage (of a storm, flu, etc.)/to be on a rampage/to be rampant/to wreak havoc/EntL2853344/