smirch

Noun

• an act that brings discredit to the person who does it
  • he made a huge blot on his copybook
    

• a blemish made by dirt
  • he had a smudge on his cheek
    

Verb

• 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
    

• smear so as to make dirty or stained

Related words

• Synonyms: 
  blot , smear , spot , stain , smudge , daub , slur , defame , slander , asperse , denigrate , calumniate , sully , besmirch