Etymology
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unmanned (adj.)

"not furnished with a crew," 1540s, from un- (1) "not" + past participle of man (v.).

updated on February 28, 2014

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Definitions of unmanned from WordNet

unmanned (adj.)
lacking a crew;
an unmanned satellite to Mars
Synonyms: remote-controlled
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.