1
as in dense
impossible to get through or into
the ancient temple was surrounded by vast stretches of impenetrable jungle
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Antonyms & Near Antonyms
2
as in mysterious
being beyond one's powers to know, understand, or explain
the mysteries of that religion are completely impenetrable to outsiders
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3
as in incomprehensible
impossible to understand
the textbook's language is completely impenetrable, at least to me
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Antonyms & Near Antonyms
4
as in tight
not allowing penetration (as by gas, liquid, or light)
the container of toxic waste has an impenetrable seal to prevent leaks
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Example Sentences
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Recent Examples of impenetrable
And where leadership believes their infrastructure is impenetrable, red teams often walk through the front door with nothing more than confidence and a cover story.
—
Jochen Schwenk, Forbes.com, 4 June 2025
To say that this film is impenetrable is an understatement.
—Sophie Monks Kaufman, IndieWire, 22 May 2025
Growing pressure Still, this spiritual shield is not impenetrable.
—Ogar Monday, Christian Science Monitor, 8 May 2025
But the paranoia of the missing papers was impenetrable.
—Ron Grossman, Chicago Tribune, 9 Mar. 2025
See All Example Sentences for impenetrable
Jochen Schwenk, Forbes.com, 4 June 2025
To say that this film is impenetrable is an understatement.
—Sophie Monks Kaufman, IndieWire, 22 May 2025
Growing pressure Still, this spiritual shield is not impenetrable.
—Ogar Monday, Christian Science Monitor, 8 May 2025
But the paranoia of the missing papers was impenetrable.
—Ron Grossman, Chicago Tribune, 9 Mar. 2025
See All Example Sentences for impenetrable
Recent Examples of Synonyms for impenetrable
Adjective
-
These waves are often emitted by cold, dense regions of space, like the TMC-1, where new stars and complex organic molecules can form.—
Victoria Corless,
Space.com,
30 June 2025
-
Peering across a dense stretch of woodland outside Denmark's capital with camouflage paint smeared across her face, 20-year-old Katrine scanned the horizon for threats.—
Gabe Whisnant,
MSNBC Newsweek,
30 June 2025
Adjective
-
In The Old Guard 2, following on from the climax of the first film, Andy must come to terms with her newfound mortality while preparing to face a mysterious foe (played by Uma Thurman).—
Abid Rahman,
HollywoodReporter,
1 July 2025
-
Before long, his life is plagued by a series of mysterious, sinister incidents that threaten to upend his success and bring about a most violent demise.—
Ryan Lattanzio,
IndieWire,
1 July 2025
Adjective
-
Alex Hartman runs the meme page Nolita Dirtbag on Instagram, and tells Rolling Stone the nervous emotions around Mamdani’s win could be in part because of how utterly incomprehensible or cruel many of the Trump administration decisions seem to be.—
CT Jones,
Rolling Stone,
26 June 2025
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In a brittle, anxious, nonlinear, incomprehensible (BANI) world where change is the only constant, the leadership traits that once earned respect—tenacity, decisiveness and stoicism—are no longer enough.—
Arthi Rabikrisson,
Forbes.com,
18 June 2025
Adjective
-
The timeline is tight—most growth drivers need to materialize before 2028—but the groundwork is established.—
Trefis Team,
Forbes.com,
27 June 2025
-
Steer clear of harsh chemicals and tight hairstyles to prevent further hair loss.—
Health,
Health,
26 June 2025
Adjective
-
The code also would set permeability requirements and expand the definition of artificial turf to include turf that is not 100% impervious.—
Pili Saravia,
Austin American Statesman,
2 July 2025
-
The data further reveal that Latino neighborhoods often have more impervious surfaces and older housing stock lacking modern cooling systems, both of which compound the risks of heat exposure.—
Marcos Magaña,
Los Angeles Times,
24 June 2025
Adjective
-
The cryptic introduction is a subtle nod to the bartenders that the patron is about to order one of four drinks from the Burning Blade secret menu.—
Brady MacDonald,
Oc Register,
25 June 2025
-
The moment helped confirm a romance that had been rumored for several months following several cryptic Instagram posts.—
Anna Kaufman,
USA Today,
24 June 2025
Adjective
-
As satire, Next to Heaven is unintelligible, as though someone is universalizing their own hangups and then skewering them for clout.—
Book Marks
June 20,
Literary Hub,
20 June 2025
-
Filled with uncanny creatures and unintelligible language, the book's inspiration came, Serafini muses, either from aliens, or his cat.—
David Morgan,
CBS News,
30 May 2025
Adjective
-
Politicians in the state said this was because of a loophole in the original bill that allowed the sale of thicker, reusable plastic bags at the checkout stand.—
Elizabeth Weise,
USA Today,
30 June 2025
-
Still the aftertaste of raspberry filling clings to her soft palate, as thick and heady and floral as menstrual blood.—
Carly Tagen-Dye,
People.com,
30 June 2025
Cite this Entry
“Impenetrable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impenetrable. Accessed 9 Jul. 2025.
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