- 1in a state like sleep because of an injury or illness, and not able to use your senses She was knocked unconscious. They found him lying unconscious on the floor.
- 2(of feelings, thoughts, etc.) existing or happening without you realizing or being aware; not deliberate or controlled unconscious desires The brochure is full of unconscious humor. compare subconscious
- 3unconscious of somebody/something not aware of someone or something; not noticing something; not conscious synonym oblivious to She is unconscious of the effect she has on people. He was quite unconscious of the danger. opposite conscious
adjectivejump to other results