automatic
/ˌȯ-tə-ˈma-tik/
adjective
largely or wholly involuntary; especially : reflex
acting or done spontaneously or unconsciously
done or produced as if by machine : mechanical
the automatic applause of the audience
spontaneous impulsive instinctive automatic mechanical mean acting or activated without deliberation. spontaneous implies lack of prompting and connotes naturalness. impulsive implies acting under stress of emotion or spirit of the moment.
noun
a machine or apparatus that operates automatically; especially : an automatic firearm
an automatic transmission
an automobile with an automatic transmission
noun
autopilot
a state or condition in which activity or behavior is regulated automatically in a predetermined or instinctive manner