Added 8 October 2026 unconscious /ˌʌnˈkɒnʃəs/ noun Categories: Mind & IdeasEveryday Words In Latin: subcōnscientia Wiktionary noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about unconscious at Wordnik → Where our words come from → That part of the mind wherein psychic activity takes place of which the person is unaware. adjective Not conscious; lacking awareness and the capacity for sensory perception as if asleep or dead. lay unconscious on the floor Without conscious volition. (followed by `of') not knowing or perceiving. happily unconscious of the new calamity at home Related Words: senselessinsensibleunawareignorantunvoluntaryinvoluntaryinnocentnonvoluntarynonconsciousstunnedcomatosesemicomatose Back to today's word