Synonyms of threatening

1 Syllable

dire, black, near, grim

2 Syllables

coercion, bullying, creepier, nearing, creepy, close, stormful, fiercest, looming, stormy, doomful, fiercer, parlous, warning, scowling, stormier, troublous, goner, louring, ugly, stormiest, loury

3 Syllables

upcoming, disturbing, imminent, baneful, sobering, menacing, exigent, perilous, destined, rebellious, forbidding, ominous, blackhearted, overcast, upsetting, unlucky, alarming, jeopardous, portentous, baleful, battleful, lowering, portending, ill-boding, impendent, minacious, dangerous, unsettling, forthcoming, impending, sinister, lowery, perturbing, fateful, unsafe, hopeless

4 Syllables

bellicose, unamusing, unpropitious, malificent, aggressive, commination, precursive, ill-omened, monitorial, dangersome, cautionary, terrorizing, minatory, formidable, inauspicious, unpromising, fast-approaching, overhanging

5 Syllables

unhospitable, unfavorable, irremediable, exhortatory, premonitory, comminatory, intimidation, apocalyptic

6 Syllables

intimidatory, handwriting-on-the-wall