not conscious (all senses); that part of one's mental activity of which one is not aware, but which can be detected and understood through the skilled analysis of dreams, behaviour etc
not awake; out cold
Cases of word usage
1) the thin, colourless liquid (formula CHCl3) formerly given to make a person unconscious during a surgical operation (chloroform)
2) a disease causing a person to fall unconscious with violent involuntary movements (epilepsy)
3) unconscious as the result of injury, illness etc (insensible)
4) the gradual and unconscious adoption or acceptance of ideas, facts (osmosis)
5) to make (a person) unconscious by a blow, especially on the head; to shock or surprise (a person) (stun)
6) an almost unconscious condition caused by shock, drugs, drink etc (stupor)