IPA: /ˈpaɪlɪt.ləs/
KK: /ˈpaɪlɪtləs/
Describing something that operates without a pilot or human control.
The new pilotless drone can fly autonomously without any human intervention.
Pilotless → It is formed from "pilot" (from Old French *pilot*, meaning a person who steers a ship or aircraft) and "-less" (meaning without). The word "pilotless" means without a pilot or person to steer.
Think of a 'pilot' who steers a vehicle and remember that 'pilotless' means without a pilot.