/rɪˈfræktəri ˈprɪzənər/ – Phrase
Definition: tù nhân ngoan cố, tù nhân cứng đầu.
A more thorough explanation: A refractory prisoner is a term used in legal contexts to refer to an inmate who is unmanageable, disobedient, or resistant to authority within a prison or correctional facility. This type of prisoner may refuse to follow rules or regulations, engage in disruptive behavior, or otherwise present challenges to the administration and staff of the facility.
Example: The prison warden had to take extra precautions when dealing with the refractory prisoner who repeatedly refused to follow orders and comply with the rules.