threatening Synonyms

minacious menacing ominous sinister forbidding heavy lowering sullen minatory baleful Nearing inauspicious overcast overhanging pugnacious parlous periculous peril monitory monitorial incursive intimidating intimidation intimidatory jeopardize jeopardous looming menace menacingly gloomy perilous petrifying portentous ugly unchancy warlike high-risk battleful upcoming threateningly ill-fated unsafe unpromising wakeless troublous thundery threatful life-threatening railroading risking