besmirch
🇺🇸
/bɪˈsmɜːrtʃ/
🇬🇧
/bɪˈsmɜːtʃ/
To unfairly damage someone's good reputation or to make it seem bad.
He tried to besmirch her reputation by spreading false rumors about her.
他试图通过散布关于她的虚假谣言来玷污她的名声。