besmirch
/bɪˈsmɜrtʃ/
verb
- To damage the reputation of someone or something; to make something seem less good or honorable.
- The scandal besmirches the entire organization.
- The false rumors besmirch the politician's good name.
- He tried to besmirch his rival's character with lies.
- To make something dirty or soiled.
- The mud besmirches the clean white carpet.
- Rain besmirches the freshly washed windows.
- The child's hands besmirch the tablecloth.