Related Clues:

• 'Hold it, horse!'
• 'Hey, stop right there!'
• Horse's halter?
• Steed stopper
• "Hold on!"
• "The Big ___" (1983)
• "Chill out!"
• Stop worrying
• Bout of the shivers
• Cry of surprise
• "Calm down"
• Take a break
• Take 10
• "Relax!"
• "Amazing!"