cooperate
verb (used without object)
to work or act together or jointly for a common purpose or benefit.
cooperated
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past participleof cooperate.past participle
A verb form used in perfect and passive verb constructions and that can also function as a modifier.
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past tense formof cooperate.past tense
Used to describe completed actions or previous habitual actions.
cooperateverb (used without object)to work or act together or jointly for a common purpose or benefit.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Sanofi said the it cooperated with the commission throughout the investigation, which ended without finding any infringement.
From The Wall Street Journal ● Oct. 14, 2026
The two countries have previously cooperated on existential threats such as nuclear weapons, but that was based on a shared understanding of the threat, which is not currently the case with AI, Dave said.
From BBC ● Sep. 23, 2026
After Kao’s arrest, he added, the company fully cooperated with law enforcement.
From Salon ● Sep. 23, 2026
According to Mr. T, who cooperated in the making of the documentary beginning April 2025, he was not shown the finished product until a month ago.
From Los Angeles Times ● Sep. 9, 2026
“It wasn’t bravery. I let my mother die. I cooperated with Gaea too long. I almost let her win.”
From "The Son of Neptune" by Rick Riordan
