উদাহরণ : 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.

সমার্থক : baleful, forbidding, menacing, minacious, ominous, sinister, threatening