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unconscious

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The definition of unconscious is lacking awareness or done without realizing, or it is knocked-out, sleeping or comatose.

(adjective)

When you make a gesture automatically without thinking about it, this is an example of an unconscious gesture.
When you are hit on the head and you pass out, this is an example of a time when you are unconscious.

See unconscious in Webster's New World College Dictionary

adjective

1. not endowed with consciousness; mindless
2. temporarily deprived of consciousness: unconscious from a blow on the head
not aware (of): unconscious of his mistake
not known, realized, or intended; not done, said, etc. on purpose: an unconscious habit, unconscious humor
not aware of one's own existence; not conscious of self
having to do with those of one's mental processes that one is unable to bring into one's consciousness

Related Forms:

unconsciously adverb
unconsciousness noun

See unconscious in American Heritage Dictionary 4

adjective

Lacking awareness and the capacity for sensory perception; not conscious.
Temporarily lacking consciousness.
Occurring in the absence of conscious awareness or thought: unconscious resentment; unconscious fears.
Without conscious control; involuntary or unintended: an unconscious mannerism.

noun

The division of the mind in psychoanalytic theory containing elements of psychic makeup, such as memories or repressed desires, that are not subject to conscious perception or control but that often affect conscious thoughts and behavior.

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