automatic

adjective

  1. 1

    operating with minimal human intervention; independent of external control

    automatic transmission

    a budget deficit that caused automatic spending cuts

  2. 2

    resembling the unthinking functioning of a machine

    an automatic `thank you'

    machinelike efficiency

  3. 3

    without volition or conscious control

    the automatic shrinking of the pupils of the eye in strong light

    a reflex knee jerk

noun

  1. 1

    a pistol that will keep firing until the ammunition is gone or the trigger is released

  2. 2

    light machine gun

Synonyms

Also useful for “automatic”:Unscrambler