(noun, adjective)


1. not conscious; lacking awareness and the capacity for sensory perception as if asleep or dead

- lay unconscious on the floor

Similar word(s): asleep, incognizant, unaware, cold, comatose, innocent, insensible, senseless, kayoed, out, stunned, nonconscious, semicomatose, subconscious, insensible, involuntary, nonvoluntary, unvoluntary

2. without conscious volition

Similar word(s): involuntary, nonvoluntary, unvoluntary

3. (followed by `of') not knowing or perceiving

- happily unconscious of the new calamity at home

Similar word(s): incognizant, unaware

Sentences with unconscious as an adjective:

- She lay unconscious on the floor.

- My sudden fright was an unconscious response.


1. that part of the mind wherein psychic activity takes place of which the person is unaware

Definition categories: thought, brain, head, mind, nous, psyche