impenetrable

392 synonyms found

Pronunciation:

[ɪmpˈɛnɪtɹəbə͡l], [ɪmpˈɛnɪtɹəbə‍l], [ɪ_m_p_ˈɛ_n_ɪ_t_ɹ_ə_b_əl]
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Synonyms for Impenetrable:

invulnerable (adjective)

formidable, immune, impervious, indestructible, invincible, invulnerable, unbeatable.

opaque (adjective)

cloudy, dark, hazy, murky, obscure, opaque, unclear, vague.

Other synonyms and related words:

Byzantine, Crammed, Delphic, Operose, abstruse, accented, adamant, airtight, alchemic, ambiguous, anesthetic, antifeminist, arcane, arduous, backbreaking, baffling, bewildering, beyond comprehension, beyond reach, beyond understanding, big, bigot, black, blurred, blurry, bug, bulletproof, cabalistic, cabbalistic, caecal, callous, caseous, characterless, chauvinist, choking, clayey, cloggy, closable, close, close-fitting, close-knit, close-textured, close-woven, closed, closed forever to, closed to, clouded, coherent, cohesive, colossal, compact, compacted, complex, complicated, compressed, concentrated, concrete, condensed, confounding, confused, confusing, congested, consolidated, constipated, contorted, convoluted, crammed full, crank, crowded, cryptic, crystalline, crystallizable, deep, defensible, dense, devotee, difficult, dim, disconcerting, dogmatist, dull, dumb, elaborate, elusive, enceinte, enigmatic, enigmatical, enormous, equivocal, erect, erectile, esoteric, expectant, extremist, exuberant, fanatic, fast, fathomless, featureless, fiend, firm, fixed, flabbergasting, fleshy, flinty, flourishing, foggy, full of, giant, gigantic, gluey, gnarled, gone to seed, gordian, granite, grave, gravid, greaseproof, great, grievous, gross, grueling, gruelling, grumous, hard, hard-bitten, hardened, heavy, hermetic, hermetical, hermetically sealed, hidden, holeproof, huge, hypocrite, immovable, impassable, imperdible, imperforate, impermeable, impervious to light, imporous, imposing, impregnable, in the background, inaccessible, inapprehensible, inarticulate, incognizable, incoherent, incomprehensible, incompressible, inconceivable, incontestable, indecipherable, indefinite, indiscernible, indiscoverable, indivisible, indomitable, indulging intemperately, inexplicable, inexpugnable, inflexible, inscrutable, insensible, insoluble, insolvable, insuperable, insusceptible, intemperate, intractable, intricate, inviolable, invious, invisible, involved, irresistible, jam-packed, jammed, jungled, jungly, kabbalistic, knotted, knotty, knowledge, labored, laborious, laboured, labyrinthine, large, leaden, leak-proof, leathery, lost to, lowering, lumbering, lumpish, lush, luxuriant, magical, maniac, massive, mighty, misty, monolithic, monumental, mothproof, muddy, mysterious, mystic, mystical, mystifying, neck and neck, non-translucent, non-transparent, nonporous, nonpuncturable, numinous, nut, obdurate, obfuscated, obscured, obscuring, obtuse, occult, out of reach, out-of-the-way, over head, overgrown, overpowering, overrun, overweight, overwhelming, packed, paradoxical, past comprehension, pathless, pea soup, perplexing, petrified, ponderous, preternatural, profound, proof, proof against, protective, pukka, punctureproof, punishing, puzzling, racist, rambling, rank, recondite, repellent, resistant, resistant to, resistless, rigid, riotous, rock-hard, rocklike, rugged, safe, sealed, secure, secured, segregationist, serious, serried, set, sexist, sharply inclined, shedding, sibylline, slow, smoggy, smoky, snug, solid, solidified, sonorous, sound, soundproof, soupy, steely, stiff, stolid, stony, strong, stuffy, stupefying, substantial, sullen, supernatural, superphysical, supersensible, tempered, tenable, thick, thick-growing, thickset, threatening, tight, toilsome, tough, transcendental, turbid, twisted, un-come-at-able, unaccessible, unaccomplished, unaccountable, unapparent, unapproachable, unassailable, unattackable, unattainable, unavailable, unbending, uncanny, uncomprehensible, unconnected, unconquerable, undecipherable, undifferentiated, undiscoverable, unexplainable, unexplained, unfathomable, ungettable, ungraspable, unguessed, uniform, unimaginable, unintelligible, unknowable, unknown, unnavigable, unobtainable, unpassable, unperforable, unpiercable, unpierceable, unpierced, unplumbable, unprocurable, unreachable, unreadable, unsearchable, unsecurable, unseen, unspied, unsubduable, unsurmountable, unsusceptible, unsuspected, untransparent, untrod, untrodden, unweeded, unyielding, vaccinated, viscid, viscose, viscous, wakeless, waterproof, watertight, wayless, weed-choked, weed-ridden, weedy, weighed down, weighty, zealot.

Quotes for Impenetrable:

  1. Crime is a fact of the human species, a fact of that species alone, but it is above all the secret aspect, impenetrable and hidden. Crime hides, and by far the most terrifying things are those which elude us. Georges Bataille.
  2. The trifle now inscribed with your name. was occasioned by a particular fact; but to the disgrace of human nature, the subject is sufficiently general to interest every heart not totally impenetrable Thomas Day.
  3. Life within the Kremlin was shrouded in impenetrable secrecy. Harrison Salisbury.