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

Twain and Marie-Anne became close friends, and Twain was shocked to learn that Marie-Anne and Lange had been allegedly carrying on an extramarital affair—losing both her husband and her best friend in one fell swoop. — Rachel Burchfield, InStyle, 31 July 2026

Homer’s hero has extramarital affairs with goddesses Circe and Calypso — the latter of whom traps him and forces him to sleep with her each night for seven years. — Tom Tapp, Deadline, 27 July 2026

Although the extramarital affair made headlines at the time of Schettino’s trial, there was no evidence presented to say that he was distracted as a result of Cemortan’s presence. — Caroline Blair, PEOPLE, 15 July 2026

The Blondie singer and Videodrome star was born in Florida, the result of an extramarital affair, and was placed for adoption at three months old. — Brianna Zigler, Entertainment Weekly, 13 July 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