cooperate

verb

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

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
cooperator 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.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
His lawyer said Jagland would cooperate with the probe. Jill Lawless, Los Angeles Times, 9 Feb. 2026 When an undocumented immigrant commits a crime in a sanctuary jurisdiction and the politicians and law enforcement in that city fail to cooperate with ICE, the city is undermining federal immigration enforcement and making Americans less safe. Voice Of The People, New York Daily News, 9 Feb. 2026 In his view, the state should cooperate with ICE, which in turn would help the agency focus on arresting people with criminal histories while reducing the likelihood of violent encounters between federal officers and the public. Seth Klamann, Denver Post, 8 Feb. 2026 Many state governments have resisted efforts by the Department of Justice to obtain raw voting records, although some have cooperated. Michael Scherer, The Atlantic, 8 Feb. 2026 See All Example Sentences for cooperate

Word History

Etymology

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

First Known Use

1582, in the meaning defined at sense 1

Time Traveler
The first known use of cooperate was in 1582

Browse Nearby Words

Cite this Entry

“Cooperate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cooperate. Accessed 14 Feb. 2026.

Kids Definition

cooperate

verb
co·​op·​er·​ate kō-ˈäp-(ə-)ˌrāt How to pronounce cooperate (audio)
cooperated; cooperating
: to act, work, or associate with others so as to get something done

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