Definitions

1. noun

relating to or supporting the principles of the United States federal system or opposing the original US Constitution’s Articles of Confederation as inadequate.

“The historian studied the antifederalist movement’s impact on the creation of the US Constitution.”

2. adjective

relating to or supporting the principles of the United States federal system or opposing the original US Constitution’s Articles of Confederation as inadequate.

“The antifederalist senator voted against the ratification of the new constitution.”