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Synonyms

sign-up

American  
[sahyn-uhp] / ˈsaɪnˌʌp /
Or signup

noun

  1. an act or instance of signing up.


sign up British  

verb

  1. (adverb) to enlist or cause to enlist, as for military service

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

sign up Idioms  
  1. Enlist in an organization; also, register or subscribe to something. For example, He signed up for four years in the navy, or Are you planning to sign up for that pottery class? [Early 1900s]


Etymology

Origin of sign-up

First recorded in 1945–50; noun use of verb phrase sign up

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

One includes posts showing invitation documents and lists of names, the other has advertised large sign-up payments for joining an "elite battalion".

From BBC • Jan. 12, 2026

Barrio Power’s community leaders began meeting at least twice a week right after Thanksgiving, when they first launched the angel tree sign-up sheet.

From Los Angeles Times • Dec. 25, 2025

The sign-up bonuses are smaller, rewards multipliers are lower and perks such as trip-delay insurance are absent.

From The Wall Street Journal • Dec. 5, 2025

If you’re in the market for a new card, a low-risk way to extend your budget is to choose a card with a cash sign-up bonus, Schulz said.

From MarketWatch • Nov. 21, 2025

“Do you think you can help me make me a couple cool signs to put up with sign-up sheets on the bulletin boards?”

From "Amina's Song" by Hena Khan