What does unmanned mean?
Unmanned describes a vehicle, craft, machine, or operation that has no human crew or operator on board. It is especially common in aviation, spaceflight, military technology, robotics, and transportation. The word does not necessarily indicate that no humans are involved: an unmanned aircraft may be piloted remotely from the ground, while an unmanned ground vehicle may operate autonomously. It is therefore broader than “robotic,” which suggests mechanical or automated control, and narrower than “uninhabited,” which primarily describes a place where people do not live. The opposite, “manned,” emphasizes the presence of a human crew. Unmanned is useful because it clearly distinguishes the absence of an onboard human operator from the wider question of how the equipment is controlled or supervised.
adjectiveNot carrying or operated by a human crew, especially in reference to aircraft, vehicles, spacecraft, or machinery. The term can describe equipment that is remotely controlled as well as equipment that operates automatically.
- Without a human crew or operator on board; automated, remote-controlled, or otherwise operated without an onboard human.
"The research team sent an unmanned aircraft over the forest to monitor the wildfire."
"The unmanned spacecraft completed its orbit before transmitting its final images."
"The driverless vehicle navigated the busy terminal without a person at the controls."
“Unmanned” does not necessarily mean that no humans are involved; it often means that people are supervising the operation from a distance.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Words that share this root
How unmanned is actually used
The word is especially common in technical, formal, and industrial contexts. It is often attributive, as in “unmanned aircraft,” but can also be used predicatively, as in “the aircraft remained unmanned.”
Easily confused with unmanned
Manned means carrying or operated by a human crew, whereas unmanned means having no human crew or operator on board.