Clue: Sentry's imperative

Answer: HALT

Length: 4

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Similar Clues:

• Like a sentry (e.g. ALERT with 5 letters)
• Boeing E-3 Sentry, e.g. (AWACS with 5 letters)
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• Prison sentry's quarry (ESCAPEE with 7 letters)
• Sentry's word (e.g. FOE with 3 letters)
• Dangerous answer to a sentry (FOE with 3 letters)
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