- confederacy⇄confederacy, noun, pl.-cies.
1. a union of countries or states; group of people joined together for a special purpose; confederation or federation.
(SYN) league.
2. a conspiracy.
3. the condition or fact of being confederate; al - confederacy⇄expr. the Confederacy, the group of eleven Southern states that seceded from the United States in 1860 and 1861; the Confederate States of America.
Ex. Progress of [Civil] War favored the Confederacy in the first months (John Donald Hicks).