Related Clues:

• Stop signal on the trail
• "___, over here!"
• Horse halting word
• "You over there!"
• 'Mind. Blown.'
• What person has a command to stop?
• 'Listen here!'
• "Wasn't expecting that!"
• Instruction to stop
• "Whoa there!"
• What one might say to a horse that has bolted in the wrong direction?
• Rhyming 'Dr.'
• When hail of abuse starts, stop!
• Reaction from 1990s-era Keanu
• Call to Alexa or Siri