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

This opens up new opportunities for international cooperation, guaranteeing legal certainty for investors. —Olena Orliuk, Forbes.com, 22 May 2025

However, some analysts noted that the deal also outlines ambitious goals for energy cooperation as well as for aligning Britain’s emissions trading system with that of Europe, which could bring economic benefits in the longer term. —Stephen Castle, New York Times, 19 May 2025

The overall tone today is one of cooperation with spouses, partners and members of the general public. —Georgia Nicols, Denver Post, 19 May 2025

The prior President’s approach to China was highly ideological and competitive, stressing democracy versus autocracy, and seeking to align countries against China—while offering Beijing few incentives for cooperation. —J. Tedford Tyler, Time, 17 May 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