to stain or tarnish (a reputation, etc) or (of a reputation) to become stained or tarnished
—n , -lies, -lying, -lied, -lies
2.
a stain
3.
the act of sullying
[C16: probably from French souiller to soil]
'sulliable
—adj
Sully (ˈsʌlɪ, French sylli)
—n
Maximilien de Béthune (maksimiljɛ̃ də betyn), Duc de Sully. 1559--1641, French statesman; minister of Henry IV. He helped restore the finances of France after the Wars of Religion