unconscious
Americanadjective
-
not conscious; without awareness, sensation, or cognition.
-
temporarily devoid of consciousness.
-
not perceived at the level of awareness; occurring below the level of conscious thought.
an unconscious impulse.
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not consciously realized, planned, or done; without conscious volition or intent.
an unconscious social slight.
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not endowed with mental faculties.
the unconscious stones.
noun
adjective
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lacking normal sensory awareness of the environment; insensible
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not aware of one's actions, behaviour, etc
unconscious of his bad manners
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characterized by lack of awareness or intention
an unconscious blunder
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coming from or produced by the unconscious
unconscious resentment
noun
Other Word Forms
Etymology
Origin of unconscious
First recorded in 1705–15; 1915–20 unconscious for def. 6; un- 1 + conscious
Explanation
When you're unconscious you're passed out or asleep. Anything going on in the body that we're not aware of can also be called unconscious. Being unconscious can be very nice, especially when you're in the middle of a deep sleep. But if you're unconscious because you fainted or got hit in the head, that's not so good. Unconscious people aren't aware of what's going on, and they can't talk or do things — except maybe for sleepwalking and sleeptalking. There are also unconscious thoughts and desires: things going on in the mind that you don't know about.
Vocabulary lists containing unconscious
Latin Love, Vol I: sci
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Twelve Angry Men
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Ridding oneself of unconscious bias can be a daily practice, so I hope this 60-something single man does not sacrifice too much of his downtime for overtime.
From MarketWatch • May 20, 2026
The 56-year-old woman was found unresponsive and unconscious inside an uncovered manhole around 11:20 p.m.
From The Wall Street Journal • May 19, 2026
When Keenan was brought out of the coma, he had no idea that his experiences while unconscious weren't real.
From BBC • May 15, 2026
But on 25 April 2022, police and paramedics called to his home in Bromley, south-east London, found him unconscious.
From BBC • May 11, 2026
Taking our powers of rapid cognition seriously means we have to acknowledge the subtle influences that can alter or undermine or bias the products of our unconscious.
From "Blink" by Malcolm Gladwell
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.