un‧manned /ˌʌnˈmænd◂/ adjective
[Word Family: noun: man, manhood, mankind; adjective: manly ≠ unmanly, manned ≠ unmanned, mannish; verb: man; adverb: manfully]

1. an unmanned spacecraft does not have a person inside it

2. if a place is unmanned, nobody is working there:
an unmanned railway crossing

[TahlilGaran] Dictionary of Contemporary English ▲