hostile witness

(law) A witness who intentionally gives unfavorable evidence against the party that called him or her as its witness.

Japanese Meaning

（法律用語）証人として呼び出された側に不利な証言を故意に行う証人、つまり呼び出した側に対して敵対的な証言をする証人

During cross-examination, the lawyer was surprised when the hostile witness contradicted the defendant's account.

反対尋問中、弁護士は、自分たちの側が呼んだ証人が意図的に不利な証言をして被告の供述と矛盾したときに驚いた。

Sense（1）

(law) A witness who intentionally gives unfavorable evidence against the party that called him or her as its witness.

hostile witnesses

（ plural ）