: a person who accompanies an invited guest to an event or gathering at which guests are allowed to bring a companion or partner
My husband twice received handsome engraved invitations to presidential dinners. For those events and many others, I was the perpetual plus-one.Ana Marie Cox

Examples of plus-one in a Sentence

Recent Examples on the Web
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Despite running in the same friend groups for several years, the couple first met in 2022, when Zavier was a plus-one at Bryce’s 21st birthday party. Charna Flam, PEOPLE, 22 Sep. 2025 Echoing Vallario, Hoover knew that Burch and Derek Blasberg, the hosts—both of whom are parents—wouldn’t bat an eye at a tiny plus-one. Hannah Jackson, Vogue, 15 Sep. 2025 And there’s also the suggestion that Michaela believes Simone is betraying the feminist cause by settling at such a young age for the role of plus-one to a wealthy man who treats his relationships like a transaction. Roxana Hadadi, Vulture, 10 Sep. 2025 The young woman who knocked Mathias unconscious without laying a hand on him is Claude (Nadia Tereszkiewicz, of The Crime Is Mine), who came to the party reluctantly, the plus-one of her gallerist husband, Pierre (Jeremy Lewin). Sheri Linden, HollywoodReporter, 9 Sep. 2025 See All Example Sentences for plus-one

Word History

First Known Use

1977, in the meaning defined above

Time Traveler
The first known use of plus-one was in 1977

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Cite this Entry

“Plus-one.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plus-one. Accessed 30 Sep. 2025.

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