baleful
-
(s) deadly or sinister
- the Florida eagles have a fierce baleful look
-
(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