as in vulnerable
lacking protection from danger or resistance against attack
the cowardly soldiers fled, leaving the palace undefended
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Recent Examples of undefended
Ukraine says that would amount to surrender and leave it undefended if Moscow attacks again.
—
USA Today, 22 Apr. 2025
For more than a century, the U.S. and Canada built a close, prosperous partnership—standing together in war, mutually fueling their economies through trade, and maintaining the world's longest undefended border.
—Faisal Kutty, Newsweek, 10 Mar. 2025
Trump’s aggressive tariffs may undermine another of his objectives — countering the dangers posed by a (largely) undefended Greenland, an autonomous Danish territory, at a time when China and Russia are taking an increasing interest in the Arctic.
—The Editors, National Review, 7 Mar. 2025
Zelensky said Kursk was a major strategy in the war effort, with the aim being to divert Russian troops from the main fighting in eastern Ukraine while also taking prisoners, destroying Russia’s military assets and proving Moscow was undefended.
—Brad Dress, The Hill, 5 Jan. 2025
See All Example Sentences for undefended
USA Today, 22 Apr. 2025
For more than a century, the U.S. and Canada built a close, prosperous partnership—standing together in war, mutually fueling their economies through trade, and maintaining the world's longest undefended border.
—Faisal Kutty, Newsweek, 10 Mar. 2025
Trump’s aggressive tariffs may undermine another of his objectives — countering the dangers posed by a (largely) undefended Greenland, an autonomous Danish territory, at a time when China and Russia are taking an increasing interest in the Arctic.
—The Editors, National Review, 7 Mar. 2025
Zelensky said Kursk was a major strategy in the war effort, with the aim being to divert Russian troops from the main fighting in eastern Ukraine while also taking prisoners, destroying Russia’s military assets and proving Moscow was undefended.
—Brad Dress, The Hill, 5 Jan. 2025
See All Example Sentences for undefended
Recent Examples of Synonyms for undefended
Adjective
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Because age is the highest risk factor, Florida’s large senior population is especially vulnerable.—
Kim Praitano,
Sun Sentinel,
29 July 2025
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Meanwhile, small businesses have less power and influence on trade policy— and are often more vulnerable to the impacts of tariffs.—
Vanessa Yurkevich,
CNN Money,
29 July 2025
Adjective
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When employees bring problems to their leaders, a dangerous dynamic often emerges, one that turns capable professionals into helpless children and transforms managers into overbearing parents.—
Mark Murphy,
Forbes.com,
30 July 2025
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For the first time in his life, the great shark couldn’t swim freely and, panic-stricken, bolted clear of his world and there was only emptiness, and his tail and pectoral fins were helpless in the void.—
Pat Smith,
Outdoor Life,
24 July 2025
Adjective
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People with diabetes have trouble regulating blood sugar and may be more susceptible to orange juice raising blood sugar, which is why they are often counseled to avoid orange juice.11 However, studies on this subject are contradictory.—
Sarah Bence,
Verywell Health,
22 July 2025
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Microgravity, radiation, confinement and a change in sleep-wake cycles and can exert pressure on cells, driving lower immune systems and making astronauts more susceptible to being sick during or after missions.—
Kenna Hughes-Castleberry,
Space.com,
21 July 2025
Adjective
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And Easterwood estimates that the majority of paint horses, left unprotected, will eventually develop skin issues.—
Katherine J. Wu,
The Atlantic,
21 July 2025
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The right-hander was left unprotected by the Milwaukee Brewers for the Rule 5 Draft at the MLB Winter Meetings in December.—
John Perrotto,
Forbes.com,
20 July 2025
Cite this Entry
“Undefended.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undefended. Accessed 5 Aug. 2025.
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