Unconscious

What does UNCONSCIOUS mean?

1. adjective

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

   “lay unconscious on the floor”

2. noun

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

3. adjective

   without conscious volition

4. adjective

   (followed by `of') not knowing or perceiving

   “happily unconscious of the new calamity at home”

Definitions from WordNet 3.1, Princeton University.