or co-op·er·a·tion

[ koh-op-uh-rey-shuhn ]
/ koʊˌɒp əˈreɪ ʃən /
Save This Word!


an act or instance of working or acting together for a common purpose or benefit; joint action.
more or less active assistance from a person, organization, etc.: We sought the cooperation of various civic leaders.
willingness to cooperate: to indicate cooperation.
Economics. the combination of persons for purposes of production, purchase, or distribution for their joint benefit: producers' cooperation; consumers' cooperation.
Sociology. activity shared for mutual benefit.
Ecology. mutually beneficial interaction among organisms living in a limited area.



Were you ready for a quiz on this topic? Well, here it is! See how well you can differentiate between the uses of "was" vs. "were" in this quiz.
Question 1 of 7
“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

Meet Grammar Coach

Write or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing

Meet Grammar Coach

Improve Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of cooperation

1620–30; (<Middle French ) <Late Latin cooperātiōn- (stem of cooperātiō). See cooperate, -ion

OTHER WORDS FROM cooperation

co·op·er·a·tion·ist, co-op·er·a·tion·ist, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for cooperation

British Dictionary definitions for cooperation



/ (kəʊˌɒpəˈreɪʃən) /


joint operation or action
assistance or willingness to assist
economics the combination of consumers, workers, farmers, etc, in activities usually embracing production, distribution, or trade
ecology beneficial but inessential interaction between two species in a community

Derived forms of cooperation

cooperationist or co-operationist, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012