sinisteradjective/siˈniʃtɾu/mediumsi·nis·troPortuguesEnglishEspanolFrancaisDefinitionRelating to the left; situated on the left side.The sinister side is the opposite of the right side.He is left-handed, uses his sinister hand.synleftantrightEtymologyDo latim 'sinistrus'Related wordssinistralsinistramente