0 to spoil something that is pure or someone's perfect reputation:
The whole outlook from these houses is sullied by soot besmirched in a soot-laden atmosphere.
They have sullied compassion and scoffed at what they call the "dependency culture".
He rather spoiled the beginning of the debate, sullying it with a bit of party politics.
To have that sport, which can achieve so much for people, sullied by hooligans gives me intense pain.
A substantial lack of competition has sullied the commercial element in radio and television.
We are also sullied with the common external tariff.
I do not wish their reputation to be sullied because of the way in which they prosecute and have to operate the law.
She felt that it was the wrong reason for marrying; that she had sullied the institution of marriage by marrying for that reason.