/ɪˈlɪsɪt rɪˈleɪʃən/ – Phrase
Definition: quan hệ bất chính.
A more thorough explanation: “Illicit relation” refers to a romantic or sexual relationship that is considered improper, unlawful, or forbidden by law or social norms. It typically involves actions that are prohibited or not sanctioned by authorities or accepted by society.
Example: The illicit relationship between the defendant and the witness compromised the integrity of the trial.