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

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 Colombian National Police say that initial information suggests that Palacios will cooperate with US authorities in their investigation. Jamie Crawford, CNN, 5 Jan. 2022 There are also questions on who else the committee could subpoena—and if those subpoena recipients will cooperate with the committee—and at what point Attorney General Merrick Garland and the Justice Department act on the committee’s findings. Daniel Strauss, The New Republic, 4 Jan. 2022 Instacart told The Washington Post in an email that the company gave the couple a refund and will cooperate with police. Washington Post, 15 Dec. 2021 Mayfield Consumer Products spokesman Bob Ferguson, who works for an outside communications firm, said the company welcomes a review by the state and will cooperate. Bruce Schreiner, ajc, 14 Dec. 2021 The recommendations are significant, but the degree to which the State Police and other agencies will cooperate and what happens next is unclear. NBC News, 10 Dec. 2021 The agency spokesperson also dismissed the notion that authorities passed the buck, insisting that French and British authorities cooperate all the time to help vessels experiencing trouble of various kinds in the English Channel. Arkansas Online, 2 Dec. 2021 That picture shows you what happens to guys who cooperate with the devil. Steven Kotler, Variety, 28 Oct. 2021 Leyva-Garcia has since obtained a special visa for crime victims who cooperate with authorities. Megan Crepeau,, 25 Oct. 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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Last Updated

12 Jan 2022

Cite this Entry

“Cooperate.” Dictionary, Merriam-Webster, Accessed 19 Jan. 2022.

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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

More from Merriam-Webster on cooperate

Nglish: Translation of cooperate for Spanish Speakers

Britannica English: Translation of cooperate for Arabic Speakers


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