Pertaining to a league or contract; derived from an agreement or covenant between parties, particularly between nations. The Romans, contrary to federal right, compelled them to part with Sardinia.

Consisting in a compact between parties, particularly and chiefly between states or nations; founded on alliance by contract or mutual agreement; as a federal government, such as that of the United States.

Friendly to the constitution of the United States.

an appellation in America, given to the friends of the constitution of the United States, at its formation and adoption, and to the political party which favored the administration of President Washington.