Englishominous
adjective
ominous black clouds gathered on the horizon:
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.
ominous Oxford Dictionary of English