smirch

smirch (http://definr.com/smirch)

     n 1: a blemish made by dirt; "he had a smudge on his cheek" [syn:
           smudge, spot, blot, daub, smear, slur]
     2: an act that brings discredit to the person who does it; "he
        made a huge blot on his copybook" [syn: blot, smear, spot,
         stain]
     v 1: smear so as to make dirty or stained [syn: besmirch]
     2: charge falsely or with malicious intent; attack the good
        name and reputation of someone; "The journalists have
        defamed me!" The article in the paper sullied my
        reputation" [syn: defame, slander, asperse, denigrate,
         calumniate, smear, sully, besmirch]