smirch

noun

1

an act that brings discredit to the person who does it

he made a huge blot on his copybook

Synonym: blot smear spot stain

2

a blemish made by dirt

he had a smudge on his cheek

Synonym: smudge spot blot daub smear slur

verb

1

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

Synonym: defame slander asperse denigrate calumniate smear sully besmirch

2

smear so as to make dirty or stained

Synonym: besmirch