Co‐öp″er‐ate (?), v. i. [imp. & p. p.Coöperated; p. pr. & vb. n.Coöperating.] [L. coöperatus, p. p. of coöperari to coöperate; co + operari to work, opus work. See Operate.] To act or operate jointly with another or others; to concur in action, effort, or effect.
Whate'er coöperates to the common mirth.
Crashaw.