fast asleep
Definition
- Adjective:
- Sleeping deeply: The phrase "fast asleep" describes a state of very deep sleep from which it is difficult to be awakened. It emphasizes the soundness and completeness of sleep.
Usage
- "Fast asleep" is used as a predicative adjective, typically following a linking verb like "be," "fall," or "lie."
- It describes a person (or sometimes an animal) who is completely and peacefully sleeping.
Examples
Advanced Usage
- "to be fast asleep": to be in a state of deep sleep.
- Don't make noise; the children are fast asleep.
- "to fall fast asleep": to enter a state of deep sleep quickly.
- Exhausted, she fell fast asleep as soon as her head hit the pillow.
Variants and Related Words
- Sound asleep (adj): A direct synonym meaning sleeping deeply.
- He was sound asleep and didn't hear the phone ring.
- Asleep (adj): The base adjective meaning sleeping. "Fast" intensifies this state.
- The cat is asleep on the chair. (This does not necessarily imply deep sleep.)
Synonyms
- In a deep sleep: Sleeping profoundly.
- Out like a light (idiomatic): To fall asleep very quickly and deeply.
Antonyms
- Wide awake: Completely awake and alert.
- Restless: Unable to sleep or relax.
Related Idioms
- Dead to the world: An idiom meaning to be so deeply asleep that you are completely unaware of your surroundings.
- After the night shift, he was dead to the world and didn't hear the storm.
Adjective
-
sleeping deeply; he's sound asleep"
-
lying fast asleep on the sofa
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it would be cruel to wake him
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