ominous
adjective
[ ˈɒmɪnəs ]
• giving the worrying impression that something bad is going to happen; threateningly inauspicious.
• "there were ominous dark clouds gathering overhead"
Similar:
threatening,
menacing,
baleful,
forbidding,
sinister,
doomy,
inauspicious,
unpropitious,
portentous,
unfavourable,
dire,
unpromising,
black,
dark,
wintry,
gloomy,
ugly,
direful,
minatory,
minacious,
sinistrous,
Origin:
late 16th century: from Latin ominosus, from omen, omin- ‘omen’.