Related Clues:

• "Eek!" preceder
• Moccasin sound
• Sign of an escape?
• ''Boo!'' accompanier
• Startling announcement?
• Fan's verbal thumbs-down
• Emulate a snake
• Protruded-lip expression
• October 31 shout
• Jeering cry
• Jump start?
• Rebuke from a fan
• Tire leak sound
• Starting word
• Sound issued with an arched back, perhaps