ənˈdeɪndʒɚ ənˈdeɪndʒə ɪmˈpɛɹ əl ˈpɛɹɪl ˈθɹɛt.n̩ act in a threatening manner A menacing person express a threat either by an utterance or a gesture he menaced the bank manager with a stick pose a threat to; present a danger to The pollution is endangering the crops a threat or the act of threatening he spoke with desperate menace something that is a source of danger earthquakes are a constant threat in Japan