extramarital affair
Definitions
A sexual or romantic relationship between a married person and someone other than their spouse.
An instance of infidelity occurring outside the bounds of a marriage.
Examples
The novel explores the emotional consequences of an extramarital affair on a young family.
Rumors of an extramarital affair began to circulate shortly after the politician announced his resignation.
Synonyms
adultery infidelity cheating unfaithfulness illicit liaison extramarital relationship stepping out
Antonyms
marital fidelity monogamy faithfulness marital loyalty exclusivity devotion to spouse marital commitment