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 cooperate (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 Schaffer agreed on April 16 to cooperate fully with prosecutors and is among at least 19 members of the right-wing group whose members or associates have been charged with planning for violence in the Capitol attack. Washington Post, 2 June 2021 For a long time, most archaeologists assumed that hunger for bread was the thing that got people to settle down and cooperate and have themselves an agricultural revolution. Kate Julian, The Atlantic, 1 June 2021 But the administration is not trying to isolate China, and instead attempting to walk a careful line between pressuring Beijing to cooperate and demonstrating that in its absence, the United States will intensify its own investigation. New York Times, 27 May 2021 FirstEnergy has not been charged with any crimes but disclosed in April that the company was talking with federal authorities about a deal to cooperate in the investigation and perhaps pay a fine to avoid being criminally charged. Robert Higgs, cleveland, 25 May 2021 An ecologist describes ways trees communicate, cooperate and compete. Star Tribune, 25 May 2021 An ecologist describes ways trees communicate, cooperate and compete. The New York Times, Arkansas Online, 23 May 2021 As part of his plea agreement, Greenberg is required to cooperate fully with the federal government in other ongoing investigations and prosecutions. Paula Reid, David Shortell And Gloria Borger, CNN, 21 May 2021 While federal officials were still trying to determine whether a foreign nation could be involved, Russian intelligence has been known to cooperate with Eastern European cybercriminals in the past. Luke Barr, ABC News, 13 May 2021

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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Time Traveler for cooperate

Time Traveler

The first known use of cooperate was in 1582

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Statistics for cooperate

Last Updated

5 Jun 2021

Cite this Entry

“Cooperate.” Dictionary, Merriam-Webster, Accessed 14 Jun. 2021.

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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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