1
as in dense
impossible to get through or into
the ancient temple was surrounded by vast stretches of impenetrable jungle
Synonyms & Similar Words
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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
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
-
Where the Earth has a dense atmosphere, abundant water and life, Mars is a desiccated, lifeless world where even the prospects of finding fossil bacteria are a long shot.—
New Atlas,
New Atlas,
12 July 2025
-
On Friday at 6:54 a.m. a dense fog advisory was issued by the NWS Blacksburg VA in effect until 9 a.m.—
NC Weather Bot,
Charlotte Observer,
11 July 2025
Adjective
-
Scientists will use this data to study dark matter and dark energy, which make up most of the universe but remain mysterious.—
Kurt Knutsson,
FOXNews.com,
14 July 2025
-
Modern courtship is already a nightmare, but director Christopher Landon (of Happy Death Day) ups the stakes when a woman (Meghann Fahy) receives a series of mysterious and threatening AirDrops during her date.—
Savannah Salazar,
Vulture,
12 July 2025
Adjective
-
And as the discourse around it keeps stacking up, what started as a silly turn of phrase has devolved into an incomprehensible mess that’s preventing people from noticing the much more insidious shift around them.—
CT Jones,
Rolling Stone,
11 July 2025
-
This is because for the first Daemon X Machina, the story was an incomprehensible mess.—
Ollie Barder,
Forbes.com,
9 June 2025
Adjective
-
Rodman pulled her hair back into a tight bun and accessorized with delicate pieces of jewelry, including earrings, bracelets and rings.—
Julia Teti,
Footwear News,
9 July 2025
-
This minimizes losses from expired or unsold products and lowers risk by maintaining tighter control over merchandise.—
Expert Panel®,
Forbes.com,
9 July 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
-
On Thursday, Bloom shared a series of cryptic quotes from Swiss psychologist and psychiatrist Carl Jung on Instagram.—
Lianne Kolirin,
CNN Money,
4 July 2025
-
The team also discovered two more new species: the cryptic Namib day gecko and the miniature Namib day gecko.—
Aspen Pflughoeft
July 3,
Miami Herald,
3 July 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
-
Back inside, the primary suite carries on the adobe style with thick, smooth walls and rounded edges.—
Demetrius Simms,
Robb Report,
14 July 2025
-
The three-day Tampa conference was thick with criticism of DOJ and disbelief that the president could have let so many people down.—
Shelby Talcott,
semafor.com,
14 July 2025
Cite this Entry
“Impenetrable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impenetrable. Accessed 19 Jul. 2025.
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