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