· pose a threat to; present a danger to; "The pollution is endangering the crops"
Synonym(s): endanger, jeopardize, jeopardise, menace, imperil, peril
· to utter intentions of injury or punishment against; "He threatened me when I tried to call the police"
Hypernym(s): warn
· to be a menacing indication of something; "The clouds threaten rain"; "Danger threatens"
Hypernym(s): bode, portend, auspicate, prognosticate, omen, presage, betoken, foreshadow, augur, foretell, prefigure, forecast, predict
· threatening or foreshadowing evil or tragic developments; "a baleful look"; "forbidding thunderclouds"; "his tone became menacing"; "ominous rumblings of discontent"; "sinister storm clouds"; "a sinister smile"; "his threatening behavior"; "ugly black clouds"; "the situation became ugly"
Synonym(s): baleful, forbidding, menacing, minacious, minatory, ominous, sinister
· darkened by clouds; "a heavy sky"
Synonym(s): heavy, lowering, sullen