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

As for the extramarital affair between Moore and Shiver, the school first received a tip last summer, which led to the school opening its own investigation into the case. —Trey Wallace Outkick, FOXNews.com, 1 May 2026

Gonzales resigned shortly after, denying wrongdoing after the San Antonio Express-News revealed his extramarital relationship with a staffer who died by suicide in 2025. —Joseph Konig, PEOPLE, 22 Apr. 2026

In 2023, French outlet Voici claimed Millepied had an extramarital affair with a climate activist. —Emily St. Martin, Los Angeles Times, 17 Apr. 2026

Gonzales, a Texas Republican, admitted having an extramarital affair with a staffer who died in September 2025. —Zachary Schermele, USA Today, 14 Apr. 2026

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