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cooperative (adj.)

also co-operative, "operating or striving jointly for the attaining of certain ends," c. 1600, from Late Latin cooperat-, past participle stem of cooperari "to work together" (see cooperation) + -ive. Political economy sense is from 1808, from the pre-Marx communist movement. The noun meaning "a cooperative store" is from 1883; meaning "a cooperative society" is from 1921.