co·​spon·​sor | \ (ˌ)kō-ˈspän(t)-sər How to pronounce cosponsor (audio) \
variants: or co-sponsor
plural cosponsors or co-sponsors

Definition of cosponsor

: a joint sponsor The senator was a cosponsor for both bills. Michigan Tech Student Relay For Life is a participating cosponsor of this event.The Daily Mining Gazette

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Other Words from cosponsor

cosponsor or co-sponsor transitive verb cosponsored or co-sponsored; cosponsoring or co-sponsoring
This year Simpson is carrying on the legislative struggle without Mazzoli, who has declined to cosponsor the bill without support from the Democratic House leadership … — George Russell The following summer, Bingham returned to Machu Picchu with an expedition co-sponsored by the National Geographic Society. — Duane Damon
cosponsorship \ (ˌ)kō-​ˈspän(t)-​sər-​ˌship How to pronounce cosponsorship (audio) \ or co-sponsorship noun
Increasingly, large urban malls are being built with the co-sponsorship of city governments. — Witold Rybczynski

Examples of cosponsor in a Sentence

Recent Examples on the Web

Neither bill has gained additional cosponsors in the Senate, although GOP representatives Dan Crenshaw (Texas) and Ann Wagner (Mo.) have introduced the New Parents Act in the House. Alexandra Desanctis, National Review, "A Bipartisan Paid-Leave Proposal," 6 Aug. 2019 The bill has 73 cosponsors and is expected to pass by a wide bipartisan margin. Grace Segers, CBS News, "Vote on 9/11 Victims Compensation Fund to be held Tuesday," 19 July 2019 Gillibrand is a cosponsor of Sanders’ legislation adding a small tax to financial transactions, while Harris is not. Elana Schor, The Denver Post, "2020 Dems grapple with how to pay for “Medicare for All”," 20 July 2019 The 9/11 victims bill enjoys broad bipartisan support, with 73 cosponsors in the Senate. Devlin Barrett,, "Senate poised to pass bill extending victims’ compensation fund for 9/11 responders," 18 July 2019 Majority Leader Mitch McConnell had assured 9/11 first responders that the bill would receive the Senate's consideration, and the bill currently has 73 bipartisan cosponsors. Nicholas Wu, USA TODAY, "Sen. Rand Paul delays attempt to reauthorize 9/11 first responder bill, cites cost as the reason," 17 July 2019 The parks and recreation department cosponsors the event as the city’s major summertime public event, and has reported crowds of more than 40,000 in previous years. Don Stacom,, "New Britain’s ‘Great American Boom’ means music, games, food, fireworks," 3 July 2019 Booker's version of the bill has 12 cosponsors, 5 of whom are also Democratic presidential candidates, and is the only reparations bill to be introduced in the Senate in the post-Reconstruction era. Jack Turman, Rebecca Kaplan, CBS News, "Cory Booker set to testify on reparations before House Judiciary subcommittee," 18 June 2019 Booker's legislation currently has 14 cosponsors, with six other presidential candidates among them: Sen. Michael Bennet, D-Colo. William Cummings, USA TODAY, "Trump says slavery reparations debate is 'interesting,' but doesn't 'see it happening'," 18 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cosponsor.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of cosponsor

1849, in the meaning defined above

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Last Updated

16 Aug 2019

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Time Traveler for cosponsor

The first known use of cosponsor was in 1849

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a usually brief trip or an expedition

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