Antigua and Barbuda an·ti·guaand·barbuda uncommon noun 1. a country in the northern Leeward Islands SynonymsAntigua and Barbuda Related words Broader terms country Parts Leeward IslandsCaribbeanOrganization of American States Part of AntiguaBarbudaRedondaSt. John's WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.