/ˈwɪtnɪs əˈɡɛnst ə ˈplɔɪntɪf/ – Phrase
Definition: nhân chứng chống lại bên nguyên.
A more thorough explanation: A witness against a plaintiff refers to an individual who provides testimony or evidence in a legal proceeding that is adverse to the plaintiff’s case. This witness offers information that is unfavorable to the plaintiff’s position or supports the defendant’s arguments.
Example: The witness testified against the plaintiff in the court case.