besmirch
1. [ verb ] charge falsely or with malicious intent; attack the good name and reputation of someone
Synonyms: calumniate slander asperse denigrate smirch smear sully defame
Examples:

"The journalists have defamed me!" The article in the paper sullied my reputation"

Related terms: charge badmouth assassinate libel defamation aspersion smear aspersion defamer slander
2. [ verb ] smear so as to make dirty or stained
Synonyms: smirch
Related terms: smear smudge
Similar spelling:   besmirched
  bessemer
  besmear
  Beisner