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
-
Wildfire resiliency advocates are warning that the loss of these funds will leave the state vulnerable to devastation, and are calling on California’s next governor to take that threat seriously.—
Los Angeles Times,
Los Angeles Times,
30 May 2026
-
Why are school lunches still vulnerable to industry pressure?—
Ed Gaskin,
Boston Herald,
30 May 2026
Adjective
-
The child was helpless against the power of the surging surf, injured while tossed by the waves.—
Laylan Connelly,
Oc Register,
4 June 2026
-
American society—grotesquely unequal and divided, helpless before its demagogic and oligarchic manipulators—is no longer a stranger to the dark ambiguities of lopsided economic progress.—
Wyatt Williams,
Harpers Magazine,
2 June 2026
Adjective
-
Peaches are susceptible to several diseases, including peach leaf curl, brown rot, bacterial spot, and peach scab, as well as plum curculio and other pests.—
Kim Toscano,
Southern Living,
30 May 2026
-
Commercial country music, a format of songwriting that is at least somewhat reliant on wordplay and the constant re-arranging of a familiar set of symbols (trucks, mud, whiskey, and so forth), can be particularly susceptible to the accusations.—
Jonathan Bernstein,
Rolling Stone,
30 May 2026
Adjective
-
The stretch between High Camp and Denali Pass has been the site of numerous injuries and fatalities over the years, with many incidents involving unprotected falls, according to reports.—
Kelly McGreal,
FOXNews.com,
1 June 2026
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Not necessarily, but there’s the additional factor of a Knights win meaning the second-rounder from the Andersson trade becomes an unprotected first.—
Sean McIndoe,
New York Times,
1 June 2026
Cite this Entry
“Undefended.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undefended. Accessed 7 Jun. 2026.
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