[co.op.er.a.tive] adj (1603) 1 a: marked by cooperation "~ efforts" b: marked by a willingness and ability to work with others "~ neighbors"
2: of, relating to, or organized as a cooperative
3: relating to or comprising a program of combined liberal arts and technical studies at different schools -- co.op.er.a.tive.ly adv -- co.op.er.a.tive.ness n
[2]cooperative n (1883): an enterprise or organization owned by and operated for the benefit of those using its services