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
Our two nations enjoy the world’s longest undefended border, largest trading partnership, and nearly a century of military cooperation, from the beaches of D-Day to the fight against al-Qaeda in Afghanistan.
—
Ian Cooper, Sun Sentinel, 5 May 2025
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
See All Example Sentences for undefended
Ian Cooper, Sun Sentinel, 5 May 2025
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
See All Example Sentences for undefended
Recent Examples of Synonyms for undefended
Adjective
-
The team highlighted that perovskite materials remain vulnerable to moisture, oxygen, ultraviolet light, and temperature fluctuations, all of which degrade performance over time.—
Aamir Khollam,
Interesting Engineering,
11 Nov. 2025
-
Song, her actors, and her crew were in constant dialogue about their own romantic lives, prioritizing a level of vulnerable, authentic experience to inform Materialists’ complex modern spirit.—
David Canfield,
HollywoodReporter,
10 Nov. 2025
Adjective
-
People eventually outgrow the helpless-baby stage.—
Anna Louie Sussman,
The Atlantic,
7 Nov. 2025
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Without money and without a means to earn it, women are helpless to determine the course of their own lives.—
Literary Hub,
Literary Hub,
6 Nov. 2025
Adjective
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The deterioration in the labor market has been concentrated in payroll employment, which is the [datapoint] that is the most susceptible to demographic and immigration changes.—
Liz Hoffman,
semafor.com,
4 Nov. 2025
-
However, Arizona's hot and dry desert climate made Gilbert susceptible to drought and wildfires, causing the low ranking in natural disaster risk.—
Paige Moore,
AZCentral.com,
4 Nov. 2025
Adjective
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With the expiration of TPS, these individuals are left completely unprotected and face the possibility of being detained or deported.—
Antonio Maria Delgado,
Miami Herald,
7 Nov. 2025
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Their stewardship has kept deforestation rates in Indigenous Lands in the Brazilian Amazon up to 83% lower than in unprotected areas globally.—
Simon Perry,
PEOPLE,
4 Nov. 2025
Cite this Entry
“Undefended.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undefended. Accessed 26 Nov. 2025.
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