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
Trouba opened the scoring in the first period with an undefended slap shot after an egregious Blackhawks turnover.
—
CBS News, 7 Dec. 2025
Mark Collins, who was born and raised in Newfoundland, Canada, said Canadians have long treasured their friendship with the United States and the fact that the US-Canada border is the longest undefended border on the planet.
—Matt Egan, CNN Money, 13 Oct. 2025
Even with changes that came after the 2001 terrorist attacks, Abdool, noting the reputation of the longest undefended border in the world, said the experience of traveling back and forth between the United States and Canada wasn’t like crossing other international borders.
—Eric D. Lawrence, Freep.com, 16 May 2025
Like the global undersea cable network, the United States’ deep-water drilling infrastructure is rapidly expanding while remaining almost entirely undefended.
—Robert Martinage, Foreign Affairs, 1 Jan. 2015
See All Example Sentences for undefended
CBS News, 7 Dec. 2025
Mark Collins, who was born and raised in Newfoundland, Canada, said Canadians have long treasured their friendship with the United States and the fact that the US-Canada border is the longest undefended border on the planet.
—Matt Egan, CNN Money, 13 Oct. 2025
Even with changes that came after the 2001 terrorist attacks, Abdool, noting the reputation of the longest undefended border in the world, said the experience of traveling back and forth between the United States and Canada wasn’t like crossing other international borders.
—Eric D. Lawrence, Freep.com, 16 May 2025
Like the global undersea cable network, the United States’ deep-water drilling infrastructure is rapidly expanding while remaining almost entirely undefended.
—Robert Martinage, Foreign Affairs, 1 Jan. 2015
See All Example Sentences for undefended
Recent Examples of Synonyms for undefended
Adjective
-
The Giants must capitalize with early wins against vulnerable opponents this fall to set a promising course in John Harbaugh’s first season as head coach.—
Pat Leonard,
New York Daily News,
15 May 2026
-
In addition to these external influences, Dini emphasized that long-term domestic instability has left Somalia’s coastline vulnerable, weakening local institutions and lowering the risks for pirate networks.—
Nimi Princewill,
CNN Money,
15 May 2026
Adjective
-
By contrast, the publication of his translation of Kafka in Italian in the spring of 1983 left him feeling empty, helpless, defenseless.—
Literary Hub,
Literary Hub,
13 May 2026
-
All the sweeping expansiveness snaps shut with a sudden health crisis for Kristen, its onset signaled with masterful concision in a middle-of-the-night calamity that leaves her helpless.—
Sheri Linden,
HollywoodReporter,
13 May 2026
Adjective
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But these jobs are also among the most susceptible to AI displacement.—
Sasha Rogelberg,
Fortune,
17 May 2026
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Other recommendations from the NFL include a request for the CFTC to create a unique certification process for contracts that are related to an individual player's performance or susceptible to manipulation.—
Davis Giangiulio,
CNBC,
15 May 2026
Adjective
-
In those first days of sobriety, the part of yourself that has been scabbed over with substances for so long is finally exposed, shivery and unprotected, to life dead sober.—
Literary Hub,
Literary Hub,
20 May 2026
-
Among developed nations, Americans are uniquely unprotected.—
Teresa Ghilarducci,
Boston Herald,
18 May 2026
Cite this Entry
“Undefended.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undefended. Accessed 20 May. 2026.
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