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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Crops such as rice and soybeans are also vulnerable as excessive UV-B can reduce yields and threaten food security.—
Dianne Plummer,
Forbes.com,
16 Sep. 2025
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Advertisement This granular knowledge and deep curiosity is also what drives Speer’s long-standing dedication to protecting the vast, vulnerable open ocean and deep-sea environments that lie outside of national borders and hold some of the largest reservoirs of biodiversity on earth.—
Bonnie Tsui,
Time,
15 Sep. 2025
Adjective
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And wasn’t the world hard enough, without having to care for helpless children too?—
Literary Hub,
Literary Hub,
11 Sep. 2025
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In the midst of feeling helpless, Kate said an idea took shape to commemorate the victims.—
Matthew Adams,
Fort Worth Star-Telegram,
8 Sep. 2025
Adjective
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The position of elementary education among the least susceptible to poverty might be surprising, but elementary school teachers are scarce and in demand.—
Erik Sherman,
Forbes.com,
17 Sep. 2025
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Children and babies are more susceptible to lead toxicity due to their smaller body size, metabolism, and rapid growth.—
Toby Meyjes,
MSNBC Newsweek,
17 Sep. 2025
Adjective
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Steinbaugh and Eugene Volokh, a First Amendment scholar and professor of law emeritus at the University of California, Los Angeles School of Law, both pointed to Bondi’s misrepresentation of hate speech as legally unprotected and the FCC’s role in Kimmel’s suspension.—
Angele Latham,
Nashville Tennessean,
19 Sep. 2025
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Even if a baby’s mother is negative, other members of their household may carry the virus, and vaccinations at 1 month of age can leave them unprotected for those first few weeks.—
Brenda Goodman,
CNN Money,
18 Sep. 2025
Cite this Entry
“Undefended.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undefended. Accessed 20 Sep. 2025.
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