impenetrable
- not penetrable; that cannot be penetrated, pierced, entered, etc.
- inaccessible to ideas, influences, etc.
- incapable of being understood; inscrutable; unfathomable: an impenetrable mystery.
- Physics. possessing impenetrability.
Origin of impenetrable
Synonyms for impenetrable
See more synonyms for on Thesaurus.comAntonyms for impenetrable
Related Words for impenetrable
impervious, impassable, bulletproof, unintelligible, unfathomable, baffling, unaccountable, arcane, inexplicable, inscrutable, mysterious, close, compact, firm, hard, hermetic, impermeable, inviolable, solid, substantialExamples from the Web for impenetrable
Contemporary Examples of impenetrable
At the highest navigable point of the Congo River, thick jungle creates an impenetrable wall of green around a large island.
These reporters are working within a bubble, impenetrable to secular outsiders.
But, as Korda clearly recognizes, Lee himself could be almost as impenetrable as stone.
The Brazilian defense, touted as impenetrable in pre-tournament hype, proved to be bedraggled, and porous.
He had two hits for three official at-bats; yet afterward his solitary gloom was impenetrable.
Historical Examples of impenetrable
“An impenetrable mystery” was sure “to hang for ever” as far as all mankind was concerned.
The Secret AgentJoseph Conrad
Kirkwood smiled grimly, with a face of brass, impenetrable, inflexible.
The Black BagLouis Joseph Vance
Go not to the Alhambra: the fort is impenetrable—the guard faithful.
Leila, CompleteEdward Bulwer-Lytton
He had been prepared for abuse, but not for impenetrable silence.
One Day's CourtshipRobert Barr
Since then Tawabinisy had hidden himself behind his impenetrable grin.
The ForestStewart Edward White
impenetrable
- incapable of being pierced through or penetratedan impenetrable forest
- incapable of being understood; incomprehensibleimpenetrable jargon
- incapable of being seen throughimpenetrable gloom
- not susceptible to ideas, influence, etcimpenetrable ignorance
- physics (of a body) incapable of occupying the same space as another body