Definition of "sound asleep" [sound asleep]

• Sleeping still and silently. (adjective)

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• "It was the jollyboat the search parties from Alexander and Supply found first, tied by its painter to a rock in a deserted cove; Power, sound asleep thanks to sorrow and Dutch gin, was curled up behind a pile of stones, and came quietly."
• "Iwas sound asleep in my bed in Big Bear, California, when the first plane hit."
• "He was sound asleep in his big-boy bed, arm around the giant white rabbit that had been an Easter present from Brian the year Jake was born."