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

Successful public health measures rely on cooperation. —Edna Bonhomme, Rolling Stone, 11 Mar. 2025

Even without the option of outright purchase, the U.S. will likely continue seeking closer cooperation on mineral extraction and security arrangements. —Faisal Kutty, Newsweek, 11 Mar. 2025

Goodyear reached a cooperation agreement with Elliott, which FactSet reports retains a roughly 9% stake in the company, that included adding three directors to its board. —Michael Wayland, CNBC, 8 Mar. 2025

The State didn't offer her a single thing, no agreement to dismiss her charges, no cooperation agreement, no nudge nudge, wink wink — none of it. —Peter Van Sant, CBS News, 8 Mar. 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