ENGLISH
REFERENCE

unconscious

adj. · n.
US //ˌənˈkɑnʃəs// UK //ʌnkˈɒnʃəs// un·con·scious
  1. 1 not awake (adj.)
    B2 Upper Intermediate Medicine

    not awake or aware of what is happening, usually because of an injury or illness.

    lacking sensory awareness and responsiveness to the environment, typically resulting from physical trauma, anesthesia, or illness.

    Example

    The boxer was knocked unconscious for several minutes after the heavy blow.

    Example

    Paramedics found the driver unconscious at the wheel, though his vital signs remained stable despite the severity of the impact.

  2. 2 without realizing (adj.)
    B2 Upper Intermediate

    done or felt without you realizing it or thinking about it.

    occurring without the agent's deliberate intention or conscious awareness.

    Example

    She had an unconscious habit of tapping her pen when she was nervous.

    Example

    The artist's work often reveals unconscious biases that reflect the social environment of her upbringing rather than her stated beliefs.

Show 1 more senseShow fewer
  1. 3 the hidden mind (n.)
    C1 Advanced Academic Psychology

    the part of your mind that contains feelings and thoughts you are not aware of.

    the part of the psyche that is not available to introspection but influences behavior and emotions.

    Example

    He believed that dreams were a way to understand the unconscious.

    Example

    Freudian theory suggests that many of our daily anxieties are rooted in the unconscious, shaped by early childhood experiences we no longer remember.

    Usage

    Usually used with the definite article 'the'.

    • conscious mind
Origin

From un- + conscious.

© 2026 English Reference