1. to damage the reputation of someone or something; to make dirty or stained
Usage: third person singular present tense of 'besmirch'

Examples

• The scandal besmirches the politician's previously clean record.
• She refuses to let gossip besmirch her family's good name.
• The mud besmirches his white shirt after the fall.
• False accusations often besmirch innocent people's reputations.
• The company's unethical practices besmirch its brand image.
• He besmirches everything he touches with his careless attitude.