Related Clues:

• In diner before closing I beat up crank
• Sons name desert leader of Ottomans, having run in extremist
• Fanatic given such sound treatment?
• One's backing in part lunatic?
• The "U" in UHF
• Michelob beer
• "Sound" beginning
• Sound leader?
• Uber
• A zealot - in fact, a loony
• Prefix signifying 'beyond the ordinary'
• Over-enthusiastic person
• Not all adult radio plays are extreme
• Excessive(ly) (prefix)
• Some consult Raymond who's an extremist