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  • sign-up
    sign-up
    noun
    an act or instance of signing up.
  • sign up
    sign up
    verb
    (adverb) to enlist or cause to enlist, as for military service
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.

If you want to optimize your savings even more, sign up for the restaurant’s loyalty program.

From MarketWatch • May 14, 2026

Here’s how public school seniors can check their eligibility and sign up to claim their scholarship funds.

From Los Angeles Times • May 13, 2026

Alex tried to sign up to a computer college in France and told them his real name.

From BBC • May 13, 2026

Kymi Able-Brown, a 38-year-old physical therapist, is among the millions of borrowers who recently received an email from the Education Department saying she had to sign up for a new plan.

From The Wall Street Journal • May 2, 2026

But then I remember that I did sign up to be her helper, so I hand her back her purse and kneel down to get a closer look.

From "Dragons in a Bag" by Zetta Elliott

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