Definition of "Sully" :

noun: French statesman (1560-1641)

noun: United States painter (born in England) of portraits and historical scenes (1783-1872)

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

verb: make dirty or spotty, as by exposure to air; also used metaphorically

verb: place under suspicion or cast doubt upon

"Sully someone's reputation."