unfavorable, poisonous, unlucky, mischievous, malign, hurtful, harmful, injurious, evil, dishonest, corrupt, disastrous
In the ordinary useage of the word "ominous", you could substitute it with its synonyms: fateful, sinister, threatening or menacing. Hope that helps.
A bar sinister is a non-standard term in heraldry for a bend sinister or baton sinister, found on a coat of arms.
Sinister--suggesting evil or trouble her sinister smile showed people she didn't have good intentions
Context clues are clues in the surrounding sentences that help you figure out an unknown word. Example: say you do not know what sinister means..... The sinister man spits on puppy's and steals other peoples belongings. From this sentence you can conclude sinister means bad/evil.
Sinister = LeftDexter = Right
Sinister Dexter was created in 1993.
Sinister was released on 10/12/2012.
The Production Budget for Sinister was $3,000,000.
Sinister - band - was created in 1988.
Sinister - band - ended in 2004.
Sinister Hands was created in 1932.
Sinister violence was created in 2008.