Co·öp·er·ate v. i. [imp. & p. p. Cooperated; p. pr. & vb. n. Cooperating.] To act or operate jointly with another or others; to concur in action, effort, or effect.
Whate'er cooperates to the common mirth. --Crashaw.
v : 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, get together]