society > authority > office > appointment to office > choosing or fact of being chosen for office > [adjective] > electing or elected by existing members
co-optative1874
co-opting1875
co-opted1881
co-optated1882
co-optive1894
1875 J. A. SymondsRenaissance in Italy I. iii. 149 The Grand Council..as a co-opting body, tended to become a close aristocracy.