cooperate
verb (used without object)
to work or act together or jointly for a common purpose or benefit.
had been cooperating
-
past perfect progressiveof cooperate.past perfect progressive
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
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.
He also said he had been cooperating with the U.S.
From Los Angeles Times ● Nov. 17, 2025
The Ministry of State Security posted on social media Monday that Britain had been cooperating since 2015 with the person, who it said was a citizen of a third nation and had the surname Huang.
From Seattle Times ● Jan. 8, 2024
Leonard, who had been cooperating with U.S. investigators, was released on a medical furlough and had been under house arrest and was due to be sentenced on Sept. 22, the Union-Tribune said.
From Reuters ● Sep. 6, 2022
At that point Ms. Hutchinson got in touch with Ms. Griffin, who had been cooperating with the committee herself.
From New York Times ● Jul. 10, 2022
He had been "cooperating" before but had not testified under oath.
From Salon ● Jul. 8, 2022
