cooperator
Americannoun
plural
cooperators-
a person or organization that cooperates with another or others in some action, such as a venture or project.
-
a person or organization that practices economic cooperation or participates in a cooperative.
-
(often pejorative) a person who cooperates or collaborates with a hostile agency or force.
Other Word Forms
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.
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
According to the detective, the cooperator identified Quintero by his legal name, nickname and birth date — even describing a distinctive tribal band tattoo on his arm.
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
She was a valiant cooperator in the work of the Catholic missionaries during the early part of the last century, and American Catholics can scarcely fail to be interested in her story.
From Venerable Philippine Duchesne by G. E. M.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
