Unmanned
(adjective)
Not having a crew or staff.
Origin:
From the prefix "un-" meaning "not" and the verb "man" meaning "to provide with staff or personnel".
Examples:
- The unmanned drone flew over the city.
- The store was unmanned for the night.
- The spaceship was designed to be unmanned.
- The unmanned train station had no one to help the passengers.
- Unmanned aerial vehicles are becoming increasingly popular.