a.

1. 不省人事的，失去知覺的
   He injured his head and was unconscious for one hour.

   他傷著了頭部，一個小時沒有知覺。

2. 不知道的，未發覺的[F][（+of）]
   They were so quiet that he was completely unconscious of their presence.

   他們非常安靜，他完全不知道他們在場。

3. 無意識的，不知不覺的
   an unconscious error

   無意識犯的錯誤

n.

1. 【心】無意識[the S]

adj.

1. not awake and aware of and responding to one's environment.
2. done or existing without one realizing.
3. (unconscious of) unaware of.

n.