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Definitions

cooperator

[koh-ahp-uh-rayt-er] / koʊˈɑp əˌreɪt ər /






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.

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They’ve got one cooperator, but you can cross-examine the cooperator, who’s cooperating in hopes of a more lenient sentence.

From Slate Jan. 7, 2026

The cooperator said they were “prepared with peanut butter” when they encountered a small chihuahua, Del Rio testified.

From Los Angeles Times Oct. 10, 2025

"He is not a viable cooperator for the Fulton County D.A.,"

From Salon Feb. 27, 2024

While Wang is the first cooperator to take the stand, jurors have so far heard from three other witnesses.

From Reuters Oct. 6, 2023

Auxiliary -- N. auxiliary; recruit; assistant; adjuvant, adjutant; ayudante†, coaid†; adjunct; help, helper, help mate, helping hand; midwife; colleague, partner, mate, confrere, cooperator; coadjutor, coadjutrix†; collaborator. ally; friend &c.

From Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

“Is his case just gonna be based on the testimony of sources and cooperators, which is pretty much what it was in President Hernandez’s case?”

From Los Angeles Times Jan. 5, 2026

Some models were designed to create a vortex, which, through its shear pattern, localized cooperators within a ring while pushing cheaters to the outer rim of the environment -- essentially localizing cooperation.

From Science Daily Feb. 6, 2024

Former FBI assistant director Frank Figliuzzi suggested that "there are multiple cooperators" in the documents case because the indictment references two people's conversations.

From Salon Jul. 28, 2023

Moira Penza, a former federal prosecutor, said that the best government cooperators accepted blame on the witness stand and that the “power differential” between Ms. Ellison and Mr. Bankman-Fried could make her a compelling voice.

From New York Times Jul. 20, 2023

Many of our cooperators report that late spring frosts frequently cause failure of chestnut crops.

From Northern Nut Growers Association Report of the Proceedings at the Thirty-Seventh Annual Report Wooster, Ohio, September 3, 4, 5, 1946 by Northern Nut Growers Association




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