smirch
definition: an act that brings discredit to the person who does it
example:
speech part: noun
synonyms:
stain
definition: a blemish made by dirt
example:
speech part: noun
synonyms:
blot
definition: charge falsely or with malicious intent
example:
speech part: verb
synonyms:
smear
definition: smear so as to make dirty or stained
example:
speech part: verb
synonyms:
besmirch