defame

verbs

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"
asperse, besmirch, calumniate, defame, denigrate, slander, smear, smirch, sully
is derived from
defamatory
is derived from
defamation
is derived from
defamation
is derived from
defamer