Related Clues:

• Prefix with violet or marine
• Extremist cults pray, having lost all protection
• Prefix for 'sonic'
• "Extreme" prefix
• Prefix for "sound"
• Immoderate posh officer joins gunners
• Some useful traditions for extremist
• Hyper-
• Way beyond the norm
• Prefix with 'sonic'
• Prefix for 'violet'
• Radical university student revolutionised painting?
• One with obsession to cool attic, but only one time
• Event that’s longer than a marathon, familiarly
• Zealous supporter