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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.

On every room door there was a sign-up list.

From The Wall Street Journal • Mar. 12, 2026

Wyoming’s case came to a head this week in oral arguments in front of the state supreme court, but the litigation and continued injunction cast a shadow over the most recent sign-up period.

From The Wall Street Journal • Feb. 12, 2026

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

“Yeah, we can make the posters about this. And have sign-up sheets.”

From "Amina's Song" by Hena Khan