extramarital

adjective

ex·​tra·​mar·​i·​tal ˌek-strə-ˈmer-ə-tᵊl 

-ˈma-rə-

: of, relating to, or being sexual intercourse between a married person and someone who is not that person's spouse : adulterous

an extramarital affair

Synonyms of extramarital

• adulterous
• extracurricular

Examples of extramarital in a Sentence

she had several extramarital affairs with coworkers

Recent Examples on the Web

Personal indiscretions once seen as disqualifying, such as the extramarital affair that chased Gary Hart from the 1988 presidential race, scarcely raise an eyebrow. —Mark Z. Barabak, Mercury News, 3 Dec. 2025

Prosecutors say Brian Walshe could have been motivated to kill his wife over the extramarital romantic entanglement. —Lauren Del Valle, CNN Money, 30 Nov. 2025

Rodriguez does not admit to any extramarital entanglements — just flaws. —Madeleine Marr, Miami Herald, 13 Nov. 2025

Although Barbara was aware of Eli’s extramarital affairs, divorce was out of the question. —Alex Gurley, PEOPLE, 12 Nov. 2025

Word History

First Known Use

1925, in the meaning defined above

Rhymes for extramarital

• marital
• nonmarital
• premarital

Kids Definition

extramarital

adjective

ex·​tra·​mar·​i·​tal ˌek-strə-ˈmar-ət-ᵊl 

: of or relating to sexual intercourse between a married person and someone other than his or her spouse