Co-ōp'er-āte, v. i.

v. i. [imp. & p. p. CO-OPERATED; p. pr. & vb. n. CO-OPERATING.] [Lat. co, for con, and operatus, p. p. of operari, to work, from opus, operis, work; It. cooperare, Sp. cooperar, Fr. coopérer.] To act or operate jointly with another or others; to concur in action, effort, or effect.

Bring all your lutes and harps of heaven and earth, Whate’er co-operates to the common mirth. Crashaw.