THESAURUS
black mark
aspersion, attaint, badge of infamy, bar sinister, baton, bend sinister, black eye, blot, blur, brand, broad arrow, censure, champain, disparagement, imputation, mark of Cain, onus, pillorying, point champain, reflection, reprimand, reproach, slur, smear, smirch, smudge, smutch, spot, stain, stigma, stigmatism, stigmatization, taint, tarnish