Meaning : Deadly or sinister.
							Example : 
							The Florida eagles have a fierce baleful look.
							
Synonyms : baneful
Meaning : Threatening or foreshadowing evil or tragic developments.
							Example : 
							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.
							
Synonyms : forbidding, menacing, minacious, minatory, ominous, sinister, threatening