cooperate
verb
co·op·er·ate
kō-ˈä-pə-ˌrāt 
cooperated; cooperating; cooperates
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
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
As part of his plea deal, Heuermann has also agreed to cooperate with the Federal Bureau of Investigation's behavioral analysis unit.
—
N'dea Yancey-Bragg, USA Today, 18 June 2026
Lewis George, 38 and a third generation Washingtonian, has vowed to overrule an executive order by the city’s police chief permitting local law enforcement to cooperate with Immigration and Customs Enforcement agents.
—ABC News, 18 June 2026
City police are investigating and the university is fully cooperating with the department.
—Tom Ignudo, CBS News, 18 June 2026
The truck driver immediately stopped, called 911, and cooperated with the investigation, police said.
—Harriet Ramos, Fort Worth Star-Telegram, 18 June 2026
See All Example Sentences for cooperate
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N'dea Yancey-Bragg, USA Today, 18 June 2026
Lewis George, 38 and a third generation Washingtonian, has vowed to overrule an executive order by the city’s police chief permitting local law enforcement to cooperate with Immigration and Customs Enforcement agents.
—ABC News, 18 June 2026
City police are investigating and the university is fully cooperating with the department.
—Tom Ignudo, CBS News, 18 June 2026
The truck driver immediately stopped, called 911, and cooperated with the investigation, police said.
—Harriet Ramos, Fort Worth Star-Telegram, 18 June 2026
See All Example Sentences for cooperate
Cite this Entry
“Cooperate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cooperate. Accessed 19 Jun. 2026.
Copy CitationKids Definition
cooperate
verb
co·op·er·ate
kō-ˈäp-(ə-)ˌrāt
cooperated; cooperating
: to act, work, or associate with others so as to get something done
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