Noun

• S: (n) Confederate (a supporter of the Confederate States of America)
• S: (n) confederate, collaborator, henchman, partner in crime (someone who assists in a plot)
• direct hypernym / inherited hypernym / sister term
• S: (n) accomplice, confederate (a person who joins with another in carrying out some plan (especially an unethical or illegal plan))

Verb

• S: (v) band together, confederate (form a group or unite) "The groups banded together"
• S: (v) confederate (form a confederation with; of nations)

Adjective

• S: (adj) Confederate (of or having to do with the southern Confederacy during the American Civil War) "Confederate soldiers"
• S: (adj) allied, confederate, confederative (united in a confederacy or league)