sign on

verb

signed on; signing on; signs on
Synonyms of sign onnext

intransitive verb

1
: to engage oneself by or as if by a signature
signed on to the new project
2
: to announce the start of broadcasting for the day
sign-on
ˈsī-ˌnȯn How to pronounce sign on (audio)
-ˌnän
noun

Examples of sign on in a Sentence

I signed on for the crew team simply as a lark
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
But before Citizens Energy signed on officially, the company had two conditions. Sophie Hartley, IndyStar, 10 Dec. 2025 So far, no Republicans have signed on to the effort. Allison Pecorin, ABC News, 10 Dec. 2025 Key European leaders have traveled back-and-forth to Belgium to convince the government to sign on to the reparation proposal. Chris Massaro, FOXNews.com, 9 Dec. 2025 The accords are designed to be consistent with existing international space treaties and conventions; as of early November, 60 countries have signed on. Elizabeth Economy, Foreign Affairs, 9 Dec. 2025 Lin recently signed on to helm a film adaptation of the Helldivers video game at Sony and is set to direct Brzrkr, an adaptation of a comic book created by Keanu Reeves and Matt Kindt. Rick Porter, HollywoodReporter, 9 Dec. 2025 All told, nearly 60 brands have signed on for next summer’s extravaganza, which will be televised live from June 11 to the final on July 19. Anthony Crupi, Sportico.com, 9 Dec. 2025 Rachel Dratch, Campbell Scott, Claybourne Elder and Wayne Brady have signed on for several upcoming productions in the New York City Center’s Off Broadway Encores! Greg Evans, Deadline, 9 Dec. 2025 And Netflix just announced that the Thai rapper-singer has signed on for her first feature-film role, opposite Korean superstar Don Lee, in the action film Tygo, which is part of the Extraction universe. Jae-Ha Kim, Rolling Stone, 8 Dec. 2025

Word History

First Known Use

1879, in the meaning defined at sense 1

Time Traveler
The first known use of sign on was in 1879

Cite this Entry

“Sign on.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sign%20on. Accessed 14 Dec. 2025.

Kids Definition

sign on

verb
(ˈ)sī-ˈnȯn
-ˈnän
1
: to hire oneself by or as if by a signature
signed on as a member of the crew
2
: to announce the beginning of broadcasting

More from Merriam-Webster on sign on

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!