n. 1 confederation, association, alliance, combination, coalition, federation, confederacy, guild, society, fraternity, union, band, fellowship, club The teams in the south favour forming a football league of their own 2 in league (with). allied (with), united (with), associated (with), leagued (with), federated (with), collaborating (with), conspiring (with), in collusion (with), Colloq in cahoots (with) The suspects are said to be in league with saboteurs
v. 3 ally, unite, associate, band, combine, collaborate, join (forces), conspire, collude: Did most people league with the rebels or the official government?