Jacobin (?.)
- Bolshevik
- Bolshevist
- Bolshie
- Carbonarist
- Carbonaro
- Castroist
- Castroite
- Charley
- Communist
- Cong
- Fenian
- Guevarist
- Leninist
- Maoist
- Marxist
- Mau-Mau
- Puritan
- Red
- Red Republican
- Roundhead
- Sinn Feiner
- Trotskyist
- Trotskyite
- VC
- Vietcong
- Wobbly
- Yankee
- Yankee Doodle
- anarch
- anarchist
- anarcho-syndicalist
- bonnet rouge
- criminal syndicalist
- extreme left-winger
- extremist
- left-wing extremist
- lunatic fringe
- mild radical
- nihilist
- parlor Bolshevik
- parlor pink
- pink
- pinko
- radical
- rebel
- red
- revolutionary
- revolutionary junta
- revolutioner
- revolutionist
- revolutionizer
- sans-culotte
- sans-culottist
- subversive
- syndicalist
- terrorist
- ultra
- ultraist
- yippie