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

Hours earlier, Iran's government also approved legislation to suspend cooperation with the International Atomic Energy Agency, a move that will stymie efforts to assess the damage from U.S. airstrikes and monitor uranium enrichment. —Alexander Smith, NBC news, 26 June 2025

In a vote underscoring the tough path ahead, its parliament agreed to fast-track a proposal that would effectively stop the country’s cooperation with the International Atomic Energy Agency, the U.N. watchdog that has monitored the program for years. —Jon Gambrell, Fortune, 26 June 2025

Earlier this year, Miami-Dade approved a formal cooperation agreement with ICE for the county jail system. —Douglas Hanks, Miami Herald, 26 June 2025

The documentary is produced with the full cooperation of the Shari Lewis estate, through her daughter Mallory, who shares in her mother’s legacy performing with Lamb Chop regularly across the U.S. —Ryan Lattanzio, IndieWire, 25 June 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