hostile witness

"Never believe a hostile witness until he has safely stood the fire of cross-examination," he remarked, oracularly.

She proceeded to cross-examine him after the fashion of a barrister handling a hostile witness.

When you set out to prove a case out of the mouth of a hostile witness, you are embarking on a very doubtful enterprise.

A hostile witness might even have insinuated that she was “posing.”

She examined Mrs. Tams about the invalid's health as a lawyer examines a hostile witness.