a blemish made by dirt

同义词：smudge??/??spot??/??blot??/??daub??/??smear??/??slur

an act that brings discredit to the person who does it

同义词：blot??/??smear??/??spot??/??stain

smear so as to make dirty or stained

同义词：besmirch

charge falsely or with malicious intent; attack the good name and reputation of someone

同义词：defame??/??slander??/??asperse??/??denigrate??/??calumniate??/??smear??/??sully??/??besmirch