adjective
1. threatening or foreshadowing evil or tragic developments (Freq. 2)
-
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
• Syn:
• Similar to: ↑alarming
2. darkened by clouds
-
a heavy sky
• Similar to: ↑cloudy
• Derivationally related forms: ↑sullenness (for: ↑sullen)
Useful english dictionary. 2012.