menace

Noun

• 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
    

Verb

• 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
    

Related words

• Synonyms: 
  threat , endanger , jeopardize , jeopardise , threaten , imperil , peril