The Oxford Thesaurus An A-Z Dictionary of Synonyms - blemish v.

1) deface, mar, scar, impair, disfigure: They did nothing to blemish the beauty of the landscape. 2) tarnish, stain, sully, spoil, mar, flaw, harm, damage, scar, injure, bruise, besmirch: She has blemished my reputation by spreading those stories about me. --n. 3) disfigurement, scar, mark, impairment, stain, smear, blot; defect, flaw, error, fault, imperfection, error, erratum: Her complexion was entirely without blemish.