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

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 Representatives Seth Moulton of Massachusetts and Eric Swalwell of California, who also are running in the 2020 race are cosponsors of a similar measure in the House. Sahil Kapur, Fortune, "Joe Biden Still Supports the Hyde Amendment—and 2020 Democrats Pounce," 6 June 2019 According to the Sunrise Movement, all the major Democratic presidential candidates, except Joe Biden, are in support, with 104 cosponsors in the House and Senate. Teen Vogue, "Alexandria Ocasio-Cortez Joined Bernie Sanders and the Sunrise Movement to Speak on Climate Change and a Green New Deal," 14 May 2019 But the fact of the matter is there are 194 House Democrats, 122 of them have signed on as cosponsors to Medicare-for-all, which is single- payer health care, which would cost $32 trillion. Fox News, "Rep. Trey Gowdy on Helsinki summit fallout," 22 July 2018 My cosponsors include Democrats and Republicans, and some of Congress’ leading marijuana legalization proponents. Andy Harris, WSJ, "Pot-Smoking Agitators Burst Into My Office," 3 Oct. 2018 McCain and cosponsor Russ Feingold, a progressive Democrat representing Wisconsin, had little institutional power and were regarded by their colleagues as moralists, rather than the wheeler-dealers who are presumed to get things done in the Senate. Mark Schmitt, Vox, "John McCain’s signature campaign finance law was a real achievement — for its time," 26 Aug. 2018

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

19 Jul 2019

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Time Traveler for cosponsor

The first known use of cosponsor was in 1849

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appealing forcibly to the mind or reason

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