ominous
-
(s) threatening or foreshadowing evil or tragic developments
- a baleful look
- forbidding thunderclouds
- his tone became menacing
- ominous rumblings of discontent
- sinister storm clouds
- a sinister smile
- his threatening behavior
- ugly black clouds
- the situation became ugly
-
(s) presaging ill fortune
- ill omens
- ill predictions
- "my words with inauspicious thunderings shook heaven"- P.B.Shelley
- a dead and ominous silence prevailed
- a by-election at a time highly unpropitious for the Government