A really fast thesaurus... with lots of synonyms.
Sinister has 147 synonyms. The top synonyms for sinister are shameless, malefic, dire, antagonistic, inexpedient, unpleasant, menacing, amoral and 139 more. Browse the full list below.
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| Random | DefinitionA common synonym for sinister is shameless. Other synonyms include malefic, dire, antagonistic, inexpedient.
Sinister has 147 synonyms listed on Thesaurasize.
(adj): Inauspicious, ominous, unlucky; Evil, seeming to be evil
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