threaten
v 1: pose a threat to; present a danger to; "The pollution is
endangering the crops" [syn: {endanger}, {jeopardize}, {menace},
{imperil}, {peril}]
2: to utter intentions of injury or punishment against:"He
threatened me when I tried to call the police"
3: to be a menacing indication of something:"The clouds
threaten rain"; "Danger threatens"