plus one

plural plus ones · alternative +1 · alternative plus-one

1. A friend or partner whom one brings along to an event; a guest of a guest.

   I'm on the guestlist baby / Be my plus one

   2004, “Plus One”, in Gives It To Ya. Twice, performed by Coyote Shivers

   4 more examples

   If the invitation doesn't say Plus One, then the guest or their representative or the guest pretending to be their own representative if they don't have one will call up to check if they can bring a Plus One. Basically, a Plus One is a guest's guest.

   2005, Claire Fordham, Plus One: A Year in the Life of a Hollywood Nobody, →ISBN, page 13

   By then Kevin Pietersen may have been named as winner of two categories at the ICC Awards Night, which will receive more attention on Tuesday if, as expected, he is accompanied by Caprice, the model, who was due to arrive as his plus one today.

   2005 October 7, Richard Hobson, “Super Series faces struggle to justify its official status”, in The Times Online

   No, you ain't worth guest list / Plus one of all them girls you kiss

   2006, Amy Winehouse, “Me & Mr Jones”, in Back to Black

   It was billed as a double act but everyone knew it wasn’t going to be that way. Keir [Starmer] was there purely as The Donald’s plus one.

   2025 July 28, John Crace, “Sidekick Starmer can’t get a word in as The Donald dominates world’s most one-sided double act”, in The Guardian, →ISSN

   Synonyms: companion, guest