baleful

adjective

Threatening harm; menacing.

SYNONYMS

acrimoniousantagonisticbitterdangerousdeadlyevilevil-intentionedharmfulhate-filledhostileinjuriousmalevolentmaliciousmalignmalignantmenacingnastynoxiousperniciouspoisonoussinisterthreateningunfriendlyvenomousvindictivevirulentvitriolicwicked