1. to make dirty or stained; to damage the purity or integrity of something
Usage: third person singular present tense of ‘sully’

Examples

• The scandal sullies his previously spotless reputation.
• Rain sullies the freshly washed car.
• She refuses to let gossip sully her good name.
• The muddy water sullies everything it touches.
• His dishonest behavior sullies the family’s honor.
• The graffiti sullies the beautiful monument.