cooperation

noun

co·​op·​er·​a·​tion (ˌ)kō-ˌä-pə-ˈrā-shən 

1

: the actions of someone who is being helpful by doing what is wanted or asked for : common effort

We are asking for your full cooperation.

2

: association of persons for common benefit

established trade and economic cooperations

cooperationist

(ˌ)kō-ˌä-pə-ˈrā-sh(ə-)nist 

noun

Synonyms

• partnership
• collaboration
• association
• relationship
• affiliation

Examples of cooperation in a Sentence

The report cited a lack of cooperation between state and local officials.

Thank you for your cooperation.

We are asking for your full cooperation.

Recent Examples on the Web

The Arizona Senate passed a bill on Republican party lines last week that would encourage agreements with ICE while also forbidding any political jurisdiction to pass an ordinance or policy forbidding cooperation with federal immigration-enforcement efforts. —Ray Stern, AZCentral.com, 8 July 2025

The series is developed and produced by Robot, with production cooperation from The Seven. —Denise Petski, Deadline, 7 July 2025

International Tax Cooperation The outcome document devotes significant space to international tax cooperation. —Nana Ama Sarfo, Forbes.com, 7 July 2025

The initial recalls took place voluntarily at the manufacturer's request in cooperation with the FDA and were announced on May 20, 2025. —James Bickerton, MSNBC Newsweek, 5 July 2025

Word History

Etymology

see cooperate

First Known Use

15th century, in the meaning defined at sense 1

Rhymes for cooperation

• abbreviation
• abomination
• acceleration
• accentuation
• accommodation
• accreditation
• acculturation
• accumulation
• acetylation
• adjudication
• administration
• adulteration

Kids Definition

cooperation

noun

co·​op·​er·​a·​tion kō-ˌäp-ə-ˈrā-shən 

: the act or process of cooperating