"Unpenetrable" is a word in ENGLISH

A stone imagined by some to be of impenetrable hardness; a name given to the diamond and other substances of …

An almost impenetrable thicket or succession of thickets of thorny shrubs and brambles.

dîmatúngkad - Unfathomable, bottomless, inscrutable, impenetrable, incapable of being sounded or measured. (dî, túngkad).

Quality of being impenetrable.

Insusceptibility of intellectual or emotional impression; obtuseness; stupidity; coldness.

That property in virtue of which two portions of matter can not at the same time occupy the same portion …

Having the property of preventing any other substance from occupying the same space at the same time.

Incapable of being penetrated or pierced; not admitting the passage of other bodies; not to be entered; impervious; as, an …

Inaccessible, as to knowledge, reason, sympathy, etc.; unimpressible; not to be moved by arguments or motives; as, an impenetrable mind, …

The quality of being impenetrable; impenetrability.

In an impenetrable manner or state; imperviously.

Not permeable; not permitting passage, as of a fluid. through its substance; impervious; impenetrable; as, India rubber is impermeable to …

Not capable of being pierced; impenetrable.

Like iron in hardness, strength, impenetrability, power of endurance, insensibility, etc.;

A dense growth of brushwood, grasses, reeds, vines, etc.; an almost impenetrable thicket of trees, canes, and reedy vegetation, as …

Having no beaten path or way; untrodden; impenetrable; as, pathless woods.

Armor of excellent or tried quality, and deemed impenetrable; properly, armor of proof.

The quality or state of having been proved or tried; firmness or hardness that resists impression, or does not yield …

Impossible to be searched; inscrutable; impenetrable.

Impenetrable by shot.