Definition of open marriage
: a marriage in which the partners agree to let each other have sexual partners outside the marriage
Test Your Vocabulary
Odd Habits and Quirks
-
- Which of the following best describes an easily irritated person?

Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share open marriage
Time Traveler for open marriage
The first known use of open marriage was in 1971
See more words from the same year