co·​spon·​sor (ˌ)kō-ˈspän(t)-sər How to pronounce cosponsor (audio)
variants or co-sponsor
plural cosponsors or co-sponsors
: 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
cosponsor transitive verb
or co-sponsor
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 noun
or co-sponsorship
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 But Murray said the goal at present is to get as many cosponsors as possible before bringing the bill to Senate leadership. Kaia Hubbard, CBS News, 2 May 2024 Herron said framing her bill as a victims’ rights measure and support from cosponsor Rep. John Blanton, R-Salyersville, a retired state police major, were both key to getting her bill passed. Rebecca Grapevine, The Courier-Journal, 12 Apr. 2024 Kyrsten Sinema, the independent senator from Arizona, introduced a bill in August that would largely protect the increase, which had Republican and Democratic cosponsors. ProPublica, 16 Mar. 2024 The latest iteration of the Sunshine Protection Act, which nearly passed in 2022, has fewer cosponsors. TIME, 9 Mar. 2024 And in the House, Democrats have railed against Republicans who have pushed back on the Alabama ruling but have signed on to the Life at Conception Act, which has 124 GOP cosponsors. USA TODAY, 28 Feb. 2024 Still, the exemption for bread producers was so important to Newsom that the bill’s cosponsor, the Service Employees International Union (SEIU), approved of it to get his support, Bloomberg reported, citing a person with knowledge of the negotiations. Marco Quiroz-Gutierrez, Fortune, 6 Mar. 2024 The new wave of cosponsors follows a Senate Judiciary Committee hearing earlier this month with several tech executives, which saw members of both parties criticize the companies for their shortcomings. Owen Tedford, Forbes, 21 Feb. 2024 The legislation was introduced in the U.S. House last month and the Senate last week, with Risch as a cosponsor. Nicole Blanchard, Idaho Statesman, 17 Feb. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'cosponsor.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1849, in the meaning defined above

Time Traveler
The first known use of cosponsor was in 1849

Dictionary Entries Near cosponsor

Cite this Entry

“Cosponsor.” Dictionary, Merriam-Webster, Accessed 23 May. 2024.

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