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

In the space of a few paragraphs, Ned will abandon and recover his child, bungle an extramarital affair, win and lose, experience ecstasy and dejection. — Literary Hub, 24 Sep. 2026

But there is no reliable historical evidence for the cruelty, extramarital affairs, or emotional abuse that Monster attributes to the Borden household. — Randall Colburn, Entertainment Weekly, 24 Sep. 2026

Black also allegedly confided in Epstein about personal matters, including extramarital affairs that ended in nondisclosure agreements, according to emails released last year. — Caitlin Yilek, CBS News, 15 Sep. 2026

This status quo starts to change when Ruthie gets pregnant via extramarital affair and moves to New York to figure out her life. — Alison Herman, Variety, 8 Sep. 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