un·righteous \|ən+\adjective Etymology: alteration (influenced by -eous) of earlier unrightwise, unrightuous, from Middle English unrightwise, unrihtwise, from Old English unrihtwīs, from un- (I) + rihtwīs righteous 1.: not righteous : evil, sinful, wicked < an unrighteous man > < an unrighteous act > 2.: unjust, inequitable, unmerited < an unrighteous sentence > • un·righteously\“+\adverb • un·righteousness\“+\noun