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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Antonyms & Near Antonyms
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 the border between Panama and Colombia got a lot busier; the Darién Gap, once a notoriously impenetrable jungle, became a popular route for migrants.
—
Sarah Zhang, The Atlantic, 27 May 2025
Many organizations, particularly in healthcare and pharma, sit on mountains of legacy data that remain impenetrable to the teams who need it most.
—Abigail Stuart, Forbes.com, 10 July 2025
Riddle has done that in part by embracing the community that sees her as a way into a complicated and sometimes deliberately impenetrable sport.
—Caoimhe O'Neill, New York Times, 10 July 2025
When selecting a provider, organizations should remember to look for one that offers robust data protection offerings that ensure the storage sets are impenetrable.
—Dave Friend, Forbes.com, 27 June 2025
See All Example Sentences for impenetrable
Sarah Zhang, The Atlantic, 27 May 2025
Many organizations, particularly in healthcare and pharma, sit on mountains of legacy data that remain impenetrable to the teams who need it most.
—Abigail Stuart, Forbes.com, 10 July 2025
Riddle has done that in part by embracing the community that sees her as a way into a complicated and sometimes deliberately impenetrable sport.
—Caoimhe O'Neill, New York Times, 10 July 2025
When selecting a provider, organizations should remember to look for one that offers robust data protection offerings that ensure the storage sets are impenetrable.
—Dave Friend, Forbes.com, 27 June 2025
See All Example Sentences for impenetrable
Recent Examples of Synonyms for impenetrable
Adjective
-
The residential area is surrounded by dense woods, the Chief of the Pearl Police Department, Nick McLendon, tells PEOPLE.—
Sam Gillette,
People.com,
4 Aug. 2025
-
Billions of years ago, when Earth was a giant ball of magma, dense droplets of liquid iron rained down into the planet’s depths, and this iron rain took the highly siderophile elements along for the ride, sequestering them in the core.—
Quanta Magazine,
Quanta Magazine,
4 Aug. 2025
Adjective
-
As the stakes rise inside and outside the family, a mysterious new threat emerges…one that could unravel the Russos forever.—
Katie Campione,
Deadline,
7 Aug. 2025
-
Things took a turn after the former couple found their dog Musso chewing on a mysterious object.—
Daysia Tolentino,
EW.com,
7 Aug. 2025
Adjective
-
Some events, perhaps especially those that are morally incomprehensible, need to be wrestled with on a human level.—
Will Harris,
EW.com,
3 Aug. 2025
-
Her scream resonated with the one in my chest while also being incomprehensible and beyond me.—
Literary Hub,
Literary Hub,
28 July 2025
Adjective
-
When culture starts performing alignment instead of living it, most companies reach for fixes: tighter messaging, new values, more playbooks.—
Vibhas Ratanjee,
Forbes.com,
15 Aug. 2025
-
That’s because of the NFL’s ownership rules, which are tighter than those in other sports.—
Eben Novy-Williams,
Sportico.com,
14 Aug. 2025
Adjective
-
In the movies, zombies are impervious to knives, guns, katanas, spiked baseball bats and most other weapons an inventive auteur can think up.—
Jason Rose,
Forbes.com,
6 Aug. 2025
-
For instance, more construction in an area can lead to more impervious surfaces that retain water or shunt it toward a certain neighborhood.—
Umair Irfan,
Vox,
4 July 2025
Adjective
-
Both the New Heights podcast and Taylor Nation hinted at the announcement with cryptic social media posts on Monday morning, sending fans into an investigative frenzy.—
Maya Georgi,
Rolling Stone,
12 Aug. 2025
-
But the anticipation — and online speculation — spiked on Monday, after the star released a series of cryptic social media posts.—
Rachel Treisman,
NPR,
12 Aug. 2025
Adjective
-
However, audio quality can make or break social media content and while some people can tolerate less-than-perfect video, poor and unintelligible sound often has audiences swiping left.—
Mark Sparrow,
Forbes.com,
24 June 2025
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Airports and airplanes do not have a monopoly on unintelligible announcements.—
Michel A. Ibrahim,
Baltimore Sun,
22 June 2025
Adjective
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Each Jesse & Ben’s fry is three-eights of an inch thick.—
Andrew Watman,
Forbes.com,
7 Aug. 2025
-
Add a generous pour of dry white wine around (not on top of) the chicken, and roast for 45 to 55 minutes at 350°F, or until a meat thermometer inserted in the center of one of the thickest pieces of meat reads 145°F.—
Karla Walsh,
Better Homes & Gardens,
6 Aug. 2025
Cite this Entry
“Impenetrable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impenetrable. Accessed 19 Aug. 2025.
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