Synonyms for open marriage

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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLES FROM THE WEB FOR OPEN MARRIAGE

Such was the blended truth, irony, and wit with which Héloïse dissuaded Abélard from open marriage.

Agnes preferred an open marriage as least in consequences, and involving every trouble in the brave outset.

Uncle Richard, if that clandestine marriage with Sarah Pepper was valid, why the open marriage five months later?