Related Clues:

• It's forbidden
• Cease
• "Knock it off!"
• Checkpoint Charlie shout
• "Uncle!"
• Sentry's shout
• "I give!"
• Sentry's call
• Mom's warning
• "When!"
• Sentry's "Stop!"
• One word of advice
• Cautionary note
• ''Stop right there!''
• 'All right already!'