co·​spon·​sor | \(ˌ)kō-ˈspän(t)-sər \
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 \ 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

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 Funke and the bill’s cosponsor, Assembly Majority Leader Joseph Morelle, a Democrat from Rochester, have both lost adult children. Andrew O'reilly, Fox News, "NY bill mandates 3 months paid bereavement leave, even when grandparents die," 7 Aug. 2018 Excited to announce our legislation to honor former @Saints star Steve Gleason with the #CongressionalGoldMedal now has 67 Senate cosponsors--enough for the legislation to move forward in the Senate! Jeff Duncan,, "Congress finally finds something it can agree on: Steve Gleason," 6 June 2018 Corker has drawn eight Republican cosponsors — and five Democrats — for a bill that would force the president to get congressional approval before imposing tariffs in the name of national security. Tory Newmyer, Washington Post, "The Finance 202: Sen. Flake’s pledge to block Trump judges could force showdown on trade," 25 June 2018 Elizabeth Warren, Jeff Merkley, Kamala Harris and Kirsten Gillibrand are all cosponsors. Gregory Krieg, CNN, "There's a new Democratic agenda taking shape. It's more and more progressive. Can it survive success?," 30 Apr. 2018 McCain’s bill garnered 18 cosponsors, including three Democrats. Alex Daugherty, miamiherald, "Rubio’s record on guns: one bill, no cosponsors — and a higher NRA rating | Miami Herald," 4 Mar. 2018 Keating has a bipartisan roster of a dozen cosponsors, including four Republicans and much of the Massachusetts delegation. Shirley Leung,, "In Taunton, a gamble that has yet to pay off," 6 Apr. 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

6 Dec 2018

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Time Traveler for cosponsor

The first known use of cosponsor was in 1849

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the figure or shape of a crescent moon

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