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Pronunciation varies by accent · noun
The state of lacking consciousness, of being unconscious.
I was roused from unconsciousness by the alarm clock.
Use unconsciousness when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Unconsciousness means The state of lacking consciousness, of being unconscious.
The closest synonym depends on the sentence and intended sense.
Possible antonyms include consciousness.
I was roused from unconsciousness by the alarm clock.
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