co·​op·​er·​ate | \ kō-ˈä-pə-ˌrāt How to pronounce cooperate (audio) \
cooperated; cooperating; cooperates

Definition of cooperate

intransitive verb

1 : to act or work with another or others : act together or in compliance refused to cooperate with the police
2 : to associate with another or others for mutual benefit nations cooperating to fight terrorism

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Other Words from cooperate

cooperator \ kō-​ˈä-​pə-​ˌrā-​tər How to pronounce cooperator (audio) \ noun

Examples of cooperate in a Sentence

It will be much easier if everyone cooperates. Several organizations cooperated in the relief efforts. The country agreed to cooperate with the other nations on the trade agreement. The mother asked the child to put on his pajamas, but the child refused to cooperate. Witnesses were willing to cooperate.
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Recent Examples on the Web

Boeing Chief Executive Dennis Muilenburg said in a press conference earlier this month that the company would cooperate with all government inquiries. Andy Pasztor, WSJ, "Federal Prosecutors Subpoena Records Related to Boeing 787 Dreamliner," 28 June 2019 Their only chance for an upgrade is to find a team willing to cooperate on a sign-and-trade, but those are complicated and would require Houston to part with valuable pieces like Eric Gordon and Clint Capela. Mike Finger,, "Two years later, Spurs learning what they missed," 22 June 2019 Chuck Blazer, the former FIFA official and American football executive, pled guilty to charges including racketeering conspiracy and money laundering and agreed to cooperate with the probe in exchange for leniency. Marlo Safi, National Review, "The Beautiful, Corrupt Game," 20 June 2019 Facebook is positioned to pressure countries and central banks to cooperate with its reinvention of the global financial system. Jennifer Grygiel, The Conversation, "With cryptocurrency launch, Facebook sets its path toward becoming an independent nation," 18 June 2019 Collier claimed Bentley fired him because Collier would not follow Bentley’s order to not cooperate with the attorney general’s office in a matter related to former House Speaker Mike Hubbard’s ethics case. Mike Cason |,, "Spencer Collier settles lawsuit against former Alabama Gov. Robert Bentley," 12 June 2019 Beyond that obvious concern is the need for efficiency when the non-consenting subject is, for obvious reasons, pissed off and unwilling to cooperate. James Mcwilliams, Outside Online, "The Town That Lives with Rattlesnakes," 10 June 2019 The weather might not cooperate, with thunder, lightning and rain a possibility for Saturday night, according to the National Weather Service. Carina Julig, The Know, "“Where it all started”: Garth Brooks to perform before record-breaking crowd at Broncos Stadium," 7 June 2019 The Chinese telecommunications giant today announced a three-year memorandum of understanding to improve the technical expertise of the African Union and to cooperate on key issues related to information and communication technologies. Abdi Latif Dahir, Quartz Africa, "The African Union is doubling down on deepening its relationship with Huawei," 31 May 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cooperate.' 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 cooperate

1582, in the meaning defined at sense 1

History and Etymology for cooperate

Late Latin cooperatus, past participle of cooperari, from Latin co- + operari to work — more at operate

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Statistics for cooperate

Last Updated

9 Jul 2019

Look-up Popularity

Time Traveler for cooperate

The first known use of cooperate was in 1582

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More Definitions for cooperate



English Language Learners Definition of cooperate

: to work together : to work with another person or group to do something
: to be helpful by doing what someone asks or tells you to do
: to act in a way that makes something possible or likely : to produce the right conditions for something to happen


co·​op·​er·​ate | \ kō-ˈä-pə-ˌrāt How to pronounce cooperate (audio) \
cooperated; cooperating

Kids Definition of cooperate

: to act or work together so as to get something done

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Comments on cooperate

What made you want to look up cooperate? Please tell us where you read or heard it (including the quote, if possible).


to complain fretfully

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