unconscious UK /ˌʌnˈkɒnʃəs/US /ˌʌnˈkɑnʃəs/adjective 3noun 1forms 3 adjective3 •not awake and not able to see, hear or feel anything, usually after being hurtAfter the anesthetist administered the general anesthetic the patient was unconscious. •Without directed thought or awareness.My sudden fright was an unconscious response. •engaged in skilled performance without conscious control.Sam is unconscious, filling it, drilling it from every conceivable angle. Lem is awful and Cooper seems confused. Josh shoots too often. — 1998 noun1 •That part of mind that is not consciously perceived.Because the unconscious is outside time, it can perceive transformations beyond the limits of the ego. — 1981 formsunconsciouses · more unconscious · most unconscious