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 The best approach now is to work together and cooperate. Magi Helena, oregonlive, "Horoscope for July 13, 2020: Happy birthday Ken Jeong; Capricorn listen to sensible advice," 13 July 2020 Wong agreed to plead guilty to the charges and cooperate with federal investigators. Dominic Fracassa,, "U.S. attorney hits SFPUC with subpoena as SF City Hall corruption investigation widens," 10 July 2020 Trump and López Obrador have agreed to cooperate in responding to the coronavirus. Fox News, "Mexico's reported coronavirus cases hit 1-day high during president's visit to Washington," 9 July 2020 Douglas Dykes also vowed to cooperate in the ongoing corruption probe into the jail and county government, as well as any future cases. Cory Shaffer, cleveland, "Former Cuyahoga County HR chief Doug Dykes pleads guilty, gets probation, will cooperate with corruption probe," 2 July 2020 Interim Aurora Police Chief Vanessa Wilson told CBS News her department will cooperate fully with the federal investigation. CBS News, "Elijah McClain's father calls for everyone involved in his death to be "held accountable for their actions"," 1 July 2020 In civil aerospace, Japan will seek to cooperate with the U.S. in sending astronauts on an American lunar mission. Washington Post, "Japan to boost space cooperation with US in revised policy," 29 June 2020 Israel announced a new partnership with the United Arab Emirates on Thursday to cooperate in the fight against the coronavirus, the latest advance in the Jewish state’s efforts to build stronger ties with Arab states., "Flare-up in virus cases sets back Germany’s efforts to reopen," 26 June 2020 The law was intended to avoid state participation in increasingly severe federal immigration policies and encourage immigrants to cooperate with local police without fear of deportation. Bob Egelko,, "Feds can’t punish California financially for sanctuary law, appeals court rules," 13 July 2020

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

3 Aug 2020

Cite this Entry

“Cooperate.” Dictionary, Merriam-Webster, Accessed 11 Aug. 2020.

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More Definitions for cooperate


How to pronounce cooperate (audio)

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

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