nonmonogamous

adjective
non·​mo·​nog·​a·​mous | \ ˌnän-mə-ˈnä-gə-məs How to pronounce nonmonogamous (audio) \

Definition of nonmonogamous

: not of, relating to, or practicing monogamy : not monogamous nonmonogamous couples a nonmonogamous relationship

First Known Use of nonmonogamous

1887, in the meaning defined above

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