Impenetrable

Adjective

 * 1) not penetrable
 * The fortress is impenetrable, so it cannot be taken.
 * 1) incomprehensible; inscrutable
 * Business jargon makes this document impenetrable, I can't understand it.

Antonyms

 * penetrable

Adverbs for Impenetrable
dimly; darkly; densely; thickly; massively; absolutely; utterly; strangely; mysteriously; altogether; terribly; fearfully; blindly; unaccountably; solidly; pathlessly; inscrutably; hopelessly; defiantly; stubbornly; definitely; manifestly.

Thesaurus
Greek to one, ambiguous, arcane, beyond reach, beyond understanding, cabalistic, close, close-knit, close-textured, close-woven, closed forever to, closed to, compact, compacted, compressed, concentrated, concrete, condensed, congested, consolidated, crammed, crammed full, crowded, dense, exuberant, firm, flourishing, gluey, gross, hard, heavy, holeproof, impassable, impermeable, impervious, impregnable, inaccessible, inarticulate, incognizable, incoherent, incomprehensible, incontestable, indomitable, inexpugnable, inscrutable, insuperable, invincible, inviolable, invulnerable, irresistible, jam-packed, jammed, jungled, jungly, lost to, lush, luxuriant, massive, mystic, nonporous, nonpuncturable, numinous, out of reach, overgrown, overpowering, overrun, overwhelming, packed, past comprehension, punctureproof, rambling, rank, resistless, riotous, serried, solid, substantial, thick, thick-growing, thickset, un-come-at-able, unaccessible, unaccountable, unapproachable, unassailable, unattainable, unavailable, unbeatable, unconnected, unconquerable, undiscoverable, unfathomable, ungettable, ungraspable, unguessed, unintelligible, unknowable, unobtainable, unpassable, unperforable, unpierceable, unprocurable, unreachable, unsearchable, unsecurable, unsubduable, unsurmountable, unweeded, unyielding, viscid, viscose, viscous, weed-choked, weed-ridden, weedy

Etymology
From.

Translations

 * Chinese:
 * Czech:
 * Dutch: ondoordringbaar
 * Finnish:
 * Finnish:


 * French: impénétrable
 * German:
 * Romanian: impenetrabil, de nepătruns, de nestrăpuns
 * Russian: непроницаемый, непроходимый