or sign·up

[ sahyn-uhp ]

  1. an act or instance of signing up.

Origin of sign-up

First recorded in 1945–50; noun use of verb phrase sign up Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use sign-up in a sentence

  • Here I am now, lookin' to sign up a gover'ment hay charter, and he'll put me high and dry if this word is passed along again.

    Isle o' Dreams | Frederick F. Moore
  • We'll be sailing some day next week and you can sign up before the Commissioner any time you're ready.

    Captain Scraggs | Peter B. Kyne
  • I heard him talking to a boy the very first day I was in school, standing in line to sign up.

    Betty Lee, Freshman | David Goodger (
  • I even took lessons from the man who had the sign up, you remember, ‘Americans taught to speak English!’

    The Cup of Fury | Rupert Hughes
  • Ef yuh will step over to my office, Ive got a line o men waitin to sign up.

    Girl Scouts at Dandelion Camp | Lillian Elizabeth Roy

British Dictionary definitions for sign up

sign up

  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

Other Idioms and Phrases with sign-up


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]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.