'Cooperate' definitions:

Definition of 'cooperate'

From: WordNet
verb
Work together on a common enterprise of project; "The soprano and the pianist did not get together very well"; "We joined forces with another research group" [syn: collaborate, join forces, cooperate, get together]

Definition of 'Cooperate'

From: GCIDE
  • Cooperate \Co*["o]p"er*ate\, v. i. [imp. & p. p. Cooperated; p. pr. & vb. n. Cooperating.] [L. cooperatus, p. p. of cooperari to cooperate; co + operari to work, opus work. See Operate.] To act or operate jointly with another or others; to concur in action, effort, or effect. [1913 Webster]
  • Whate'er cooperates to the common mirth. --Crashaw. [1913 Webster]

Synonyms of 'cooperate'

From: Moby Thesaurus