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 of cooperation

• 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

This approach, however, relies on cooperation from AI vendors and is not always available. —Ambuj Tewari, Fortune, 22 Dec. 2025

Ankara framed the initiative as mutually beneficial for regional stability and economic cooperation. —Mohammed Tawfeeq, CNN Money, 21 Dec. 2025

Lavrov said earlier the ministerial conference launched talks aimed at developing an action plan for cooperation for the years 2026-2029. —Arkansas Online, 21 Dec. 2025

This approach, however, relies on cooperation from AI vendors and is not always available. —Ambuj Tewari, The Conversation, 18 Dec. 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