menace

[1]	threaten , intimidate , daunt , terrorize , terrify , cow , bully , frighten , scare , alarm
[2]	endanger , jeopardize , jeopardise , threaten , imperil , peril

[1]	threat
[2]	threat , danger , peril , hazard , risk
[3]	intimidation , scare , threat , warning , commination