vindicate

v. /ˈvɪndɪkeɪt/ C2

证明清白；证实

To prove that someone is innocent or right after doubt.

仙境例句

The Knave hoped one honest witness would vindicate him and save his head.

红桃杰克盼着有个诚实的证人能证明他清白，保住他的脑袋。