VERB
詆毀；誣蔑；玷污
If you besmirch someone or their reputation, you say that they are a bad person or that they have done something wrong, usually when this is not true.
例句
He has accused local people of trying to besmirch his reputation.
他指責(zé)當(dāng)?shù)厝似髨D敗壞他的名聲。