/ˈɛkstrə ˈmærɪtəl rɪˈleɪʃənz/ – Phrase
Definition: những mối quan hệ ngoại hôn, những mối quan hệ ngoại tình.
A more thorough explanation: Extra-marital relations refer to sexual or romantic relationships between a married person and someone who is not their spouse. These relationships are considered to be outside the bounds of marriage and are often viewed as a breach of marital fidelity.
Example: The court found evidence of extra-marital relations between the defendant and a third party, which was a factor in the decision to grant a divorce.