unmanned

adjective

without a human occupant

Wiktionary

Pronunciation: /ʌnˈmænd/

adj

Etymology: Etymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Germanic *un- Proto-West Germanic *un- Old English un- Middle English un- English un- English manned English unmanned From un- + manned.

Not operated by a person or a crew.
“unmanned drones”
“an automated e-mail message sent from an unmanned mailbox”
Of a bird of prey: not accustomed to the presence of human beings.
Of a setting, situation or event, devoid of males.

verb

simple past and past participle of unman