unconscious

Adjective

• (followed by `of') not knowing or perceiving
  • happily unconscious of the new calamity at home- Charles Dickens
    

• without conscious volition

• not conscious; lacking awareness and the capacity for sensory perception as if asleep or dead
  • lay unconscious on the floor
    

Noun

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

Related words

• Synonyms: 
  unconscious(p) , unconscious mind