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

• affiliation
• alliance
• association
• collaboration
• confederation
• connection
• hookup
• liaison
• linkup
• partnership
• relation
• relationship
• tie-up
• union

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

By prioritizing dialogue and cooperation over confrontation, the U.S. can protect its economic interests while fostering a more inclusive and prosperous society. —John Wang, New York Daily News, 2 Feb. 2025

And Rubio's first overseas visit to Central America and the Caribbean, of which Panama is the initial stop, also comes as the Trump administration seeks cooperation on its immigration policy from nearby countries, like Costa Rica, El Salvador, Guatemala and the Dominican Republic. —Kaia Hubbard, CBS News, 2 Feb. 2025

This is in cooperation with United Rentals and Turns For Troops. —Daniel R. Depetris, Newsweek, 1 Feb. 2025

But as members of an ecosystem that’s larger than any one of us, but also relies — heavily, beautifully — on our cooperation and concern and care for each and every one of us. —Heidi Stevens, Chicago Tribune, 31 Jan. 2025

Word History

Etymology

see cooperate

First Known Use

15th century, in the meaning defined at sense 1

Kids Definition

cooperation

noun

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

: the act or process of cooperating