: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Lovato wore a black-and-white gown by Rubin Singer, while Jutes looked like the perfect plus-one in a black suit and tie. Kelsie Gibson, People.com, 27 May 2025 The dog, Felicity, attended as the plus-one of an animal rights activist representing a U.K. group called NoToDogMeat. Amy Nicholson, Los Angeles Times, 23 May 2025 Requests to book the Mahomes hangout via the Airbnb app run through May 19, and four guests (and their plus-ones), who must be 21 or over, will be selected to join Mahomes on Sunday, June 1 in Kansas City, Mo. Jeff Fedotin, Forbes.com, 18 May 2025 Sophie complained and asked for a plus-one so that her boyfriend, Sam (whom my daughter had never met), could attend with her. Judith Martin, Sun Sentinel, 16 May 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 4 Jun. 2025.

Last Updated: - Updated example sentences
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