1. (noun)Confederacy, Confederate States, Confederate States of America, South, Dixie, Dixieland the southern states that seceded from the United States in 1861
2. (noun)confederation, confederacy, federation a union of political organizations
3. (noun)conspiracy, confederacy a group of conspirators banded together to achieve some harmful or illegal purpose
4. (noun)conspiracy, confederacy a secretagreement between two or morepeople to perform an unlawful act