unconsciousa.1. Not conscious; having no consciousness or power of mental perception; without cerebral appreciation; hence, not knowing or regarding; ignorant; as, an unconscious man.(Cowper.)2. Not known or apprehended by consciousness; resulting from neural activity of which a person is not aware; as, an unconscious movement; unconscious cerebration.(Blackmore.)3. Having no knowledge by experience; -- followed by of; as, a mule unconscious of the yoke.(Pope.)4. Unintentional; as, an unconscious insult.()()n. (Psychoanalysis) Usually the unconscious; that part of the mind in which mental processes occur that are not accesible to the awareness, but may significantly influence behavior.()()