unmanned

adjective

un·​manned ˌən-ˈmand How to pronounce unmanned (audio)
1
see usage paragraph below : not carrying, staffed, or performed by people : not manned
an unmanned railroad crossing
unmanned spaceflight
2
of a hawk : not trained
Usage of Manned and Unmanned

While manned and unmanned are still commonly used in news sources to describe spaceflights, NASA has since the early 21st century used and prescribed non-gender-specific terms, preferring such descriptors as human, piloted, and crewed for the former, and unpiloted and uncrewed for the latter.

Examples of unmanned in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
When a suspect car is identified, cops will be able to launch unmanned surveillance vehicles supplied by partner Skydio. Thomas Brewster, Forbes.com, 22 Apr. 2025 The bill primarily focuses on further regulating the use of unmanned aircraft systems (UAS) while broadening the scope of locations that are protected from drone flights within the state, such as airports and correctional facilities. Julia Bonavita, FOXNews.com, 21 Apr. 2025 Beijing first released rules for unmanned aircraft flight — vehicles without a pilot on board — in June 2023. Dylan Butts,evelyn Cheng, CNBC, 4 Apr. 2025 Co-led by the U.K. and Latvia, the initiative was launched in January 2024 to enhance Ukraine's unmanned aerial vehicle capabilities. Hannah Parry, Newsweek, 25 Mar. 2025 See All Example Sentences for unmanned

Word History

First Known Use

1544, in the meaning defined at sense 1

Time Traveler
The first known use of unmanned was in 1544

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Cite this Entry

“Unmanned.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unmanned. Accessed 1 May. 2025.

Kids Definition

unmanned

adjective
un·​manned ˌən-ˈmand How to pronounce unmanned (audio)
ˈən-
: having no crew aboard
an unmanned spacecraft

More from Merriam-Webster on unmanned

Last Updated: - Updated example sentences
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