open marriage


Definition of open marriage

: a marriage in which the partners agree to let each other have sexual partners outside the marriage

First Known Use of open marriage

1971, in the meaning defined above

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The first known use of open marriage was in 1971

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Cite this Entry

“Open marriage.” The Dictionary, Merriam-Webster Inc., Accessed 15 December 2019.

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open marriage


English Language Learners Definition of open marriage

: a marriage in which both people agree to allow each other to have sex with other people

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