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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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
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
This sweetly reticent follow-up is a drama about the impenetrable singularity of a young girl’s mind.
—Justin Chang, New Yorker, 26 May 2025
See All Example Sentences for impenetrable
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
This sweetly reticent follow-up is a drama about the impenetrable singularity of a young girl’s mind.
—Justin Chang, New Yorker, 26 May 2025
See All Example Sentences for impenetrable
Recent Examples of Synonyms for impenetrable
Adjective
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In addition, most microlensing efforts are recorded at the Galactic Center -- the densest part of the Milky Way, Edita Stonkutė, an associate professor of astronomy at Vilnius University, said in a statement.—
Julia Jacobo,
ABC News,
18 June 2025
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From dense, intensely aromatic reds to delicate whites, from sparkling to still, from sweet to fortified, there is a wine here that will suit any palate.—
Joseph V Micallef,
Forbes.com,
18 June 2025
Adjective
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The story in the graphic novel picks up 10 years after the events of the eponymous 1980 movie, as Joliet Jake disappears from prison under mysterious circumstances.—
Kory Grow,
Rolling Stone,
20 June 2025
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All do so, apart from the titular madman, who has a mysterious reason to stay behind.—
Rafa Sales Ross,
Variety,
20 June 2025
Adjective
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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
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Each episode represents an hour in the staff’s frenetic, 15-hour day that culminates with a mass casualty shooting and an incomprehensible case of the measles involving an unvaccinated child.—
Lynette Rice,
Deadline,
12 June 2025
Adjective
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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
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Urban heat islands are areas within cities that are significantly warmer than the surrounding areas, and this is primarily due to the replacement of natural surfaces with impervious materials like pavement and buildings.—
Stephen Underwood,
Hartford Courant,
16 June 2025
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First, the team looked at the microbiomes of corals that are impervious to SCTLD to try and harvest probiotics from these disease-resistant species.—
Laura Baisas,
Popular Science,
5 June 2025
Adjective
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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
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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
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In a life-or-death emergency, voice signals might fade or be unintelligible; Morse code could punch through static and bad weather.—
Laurie Gwen Shapiro,
New Yorker,
2 June 2025
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Decisions once made by human engineers in the future are now being executed by models whose internal logic may be unintelligible even to their creators.—
Anuj Tyagi,
Forbes.com,
16 May 2025
Adjective
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Simply lather a thick coating of petroleum jelly onto the scratch.—
Kaitlyn Yarborough,
Southern Living,
21 June 2025
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As thick clouds billowed out of Eyjafjallajökull, the skies over the North Atlantic — one of the world’s busiest aviation routes — fell silent, with air traffic dropping to levels that wouldn’t be seen again until the Covid pandemic a decade later.—
Brad Lendon,
CNN Money,
21 June 2025
Cite this Entry
“Impenetrable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impenetrable. Accessed 30 Jun. 2025.
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