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

Varnum cooperated with Carroll Carroll County Sheriff’s deputies at that time and was taken to a hospital for a mental health evaluation. Jon Kelvey,, "Westminster man indicted by federal grand jury after allegedly threatening member of Congress," 19 July 2019 According to the government, Whitman cooperated with prosecutors and wasn’t charged for her role in the alleged fraud. Travis Andersen,, "‘Best sex ever’ or best lawyer ever? R.I. jury deadlocks on marriage fraud count," 18 July 2019 The driver of the car remained on the scene and is cooperating with the investigation, according to police. Keith Schubert, Milwaukee Journal Sentinel, "A Milwaukee man is dead after being hit by a car while crossing the street, police say," 9 July 2019 The Nissan driver cooperated with the investigation, did not appear to be impaired and was released from the scene, said Sgt. Jasper Scherer, Houston Chronicle, "Motorcycle driver killed in collision after driving without lights on," 6 July 2019 The weather mostly cooperated during the annual Fourth of July event with partly sunny skies and humid temperatures in the low 90s. Karie Angell Luc,, "Lake Zurich residents celebrate Fourth of July in style with beach activities," 5 July 2019 Cincinnati will not cooperate with any raids by U.S. Immigration and Customs Enforcement, a city councilman declared. Maia Anderson,, "Chris Seelbach: Cincinnati will not cooperate with President Trump's ICE raids," 26 June 2019 So, relatively patiently, Uber and its partners are cooperating with the federal agency to push things forward as quickly as possible, while keeping safety at top of mind. Meredith Carey, Condé Nast Traveler, "How Close Are We to Flying Taxis, Really?," 12 June 2019 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

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

23 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

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