automatic

Definitions

Working by itself with little or no direct human control.

Done or occurring spontaneously without conscious thought or intention.

Relating to a device or process that operates independently of external input.

Examples

The factory uses an automatic system to package the goods.

He drives an automatic car because it is easier in heavy traffic.

The lights in the hallway are automatic and turn on when they detect motion.

Synonyms

mechanical automated robotic involuntary instinctive spontaneous reflexive

Antonyms

manual intentional deliberate voluntary conscious hand-operated thoughtful