Dictionary.com
Thesaurus.com

pilotless

American  
[pahy-luht-lis] / ˈpaɪ lət lɪs /

adjective

  1. lacking a pilot or needing no pilot.

    pilotless aircraft.

  2. having no pilot light.

    a pilotless furnace.

Etymology

Origin of pilotless

First recorded in 1595–1605; pilot + -less

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.