Synonyms of ominous in English:

ominous


See definition of ominous

adjective

1‘ominous black clouds gathered on the horizon’

SYNONYMS

threatening, menacing, baleful, forbidding, sinister, doomy, inauspicious, unpropitious, portentous, unfavourable, dire, unpromising

black, dark, wintry, gloomy, ugly

archaic direful

rare minatory, minacious, sinistrous

ANTONYMS

promising, auspicious, propitious