affair partner

noun

A person with whom one is having an extramarital or unfaithful relationship; the third party in an affair.

“Many individuals in infidelity recovery forums refer to the third party as the affair partner.”

Similar
APloverparamourthe other womanthe other man
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Meanings

nounaffair partner (plural affair partners)

plural affair partners

  1. euphemisticidiomaticA person with whom one is having an extramarital or unfaithful relationship; the third party in an affair.

    Many individuals in infidelity recovery forums refer to the third party as the affair partner.

    Synonyms: AP, lover, paramour, the other woman, the other man

Synonyms & antonyms

nounA person with whom one is having an extramarital or unfaithful relationship; the third party in an affair.

Similar
APloverparamourthe other womanthe other man
Cite this entry
APA

affair partner. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/affair%20partner

MLA

“affair partner.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/affair%20partner. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “affair partner,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/affair%20partner.

Source: affair partner on Wiktionary, CC BY-SA 4.0.