un·​manned | \ ˌən-ˈmand \

Definition of unmanned

1 : not manned an unmanned spaceflight
2 of a hawk : not trained

Examples of unmanned in a Sentence

Recent Examples on the Web

The fact that the turret is unmanned means the any enemy weapon penetrating the turret will be much less likely to kill or injure the vehicle crew. Kyle Mizokami, Popular Mechanics, "Israel's 'Namer' Infrantry Vehicle Could Be a Glimpse of the U.S. Army's Future," 13 Dec. 2018 The Japan Space Exploration Agency said the two Minerva-II-1 rovers were lowered from the unmanned spacecraft Hayabusa2 to the asteroid Ryugu. Fox News, "Japan space rovers lowered to asteroid to collect data," 21 Sep. 2018 For example, systems originally developed for unmanned aerial vehicle (UAV) safety—such as Automatic Dependent Surveillance Broadcast (ADS-B) for traffic situational awareness—have migrated into manned aircraft cockpits. Alyson Behr, Ars Technica, "More than an auto-pilot, AI charts its course in aviation," 5 Dec. 2018 An unmanned rocket crashed in a huge fireball just seconds after liftoff off in Japan. Robert Gearty, Fox News, "Rocket bursts into flames after liftoff in Japan," 30 June 2018 In 1986, in NASA's first post-Challenger launch, an unmanned Delta rocket lost power in its main engine shortly after liftoff, forcing safety officers to destroy it by remote control. azcentral, "AZ Memo: Day 6 of the #RedForEd walkout; badly burned girl hopes to meet Taylor Swift; Goody's take on 'Disobedience'," 3 May 2018 The loss of an unmanned rocket would be bad, but a crew death would be catastrophic. NBC News, "SpaceX's 'Falcon' feat may be just a prelude to the main event," 9 Feb. 2018 The temporary closure comes a day after the British government announced plans to bolster counterdrone efforts and expand police enforcement aimed at the misuse of unmanned aircraft. Stu Woo, WSJ, "Departures Resume From London Heathrow Following Drone Sighting," 8 Jan. 2019 The drone will also help detect any other unmanned vehicles in the air that aren’t authorized to fly, in addition to the cameras and police helicopters that usually keep watch. Shannon Liao, The Verge, "New York City cops will fly a drone over the New Year’s Eve celebration at Times Square," 30 Dec. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unmanned.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of unmanned

1544, in the meaning defined at sense 1

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Last Updated

11 Feb 2019

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Time Traveler for unmanned

The first known use of unmanned was in 1544

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More Definitions for unmanned



English Language Learners Definition of unmanned

: not carrying or done by a person

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Rhyming Dictionary: Words that rhyme with unmanned

Spanish Central: Translation of unmanned

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to express emotion in a dramatic way

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