Synonyms for Impenetrability:

• n.

  •attribute (noun)
  • imperviousness,
  • impenetrability.
  •density (noun)
  • substantialities,
  • substantiality,
  • heaviness,
  • body,
  • concretion,
  • consistency,
  • compactness,
  • denseness,
  • tightness,
  • solidity,
  • massiveness,
  • frequency,
  • crowdedness,
  • closeness,
  • thickness,
  • quantity.
  •firmness (noun)
  • temper,
  • inflexibility,
  • hardness,
  • durability,
  • rigidity.
  •impenetrability (noun)
  • impenetrableness.
  •Other relevant words: (noun)
  • firmness,
  • toughness,
  • impermeability,
  • fixedness,
  • density,
  • inelasticities,
  • impliability,
  • resistance,
  • tensile strength,
  • inelasticity.

• Other synonyms:

  •assurance
  • invulnerability.
  •Other relevant words (noun):
  • complicatedness,
  • cohesion,
  • viscosity,
  • Unfathomableness,
  • abstruseness,
  • complication,
  • incomprehensibleness,
  • profundity,
  • equivocation,
  • murkiness,
  • impregnability,
  • Inviolability,
  • dimness,
  • inscrutability,
  • inexpugnability,
  • opacity,
  • incompressibility,
  • enigma,
  • unintelligibility,
  • incomprehensibility,
  • obscurity,
  • invincibility,
  • specific gravity,
  • perplexity,
  • arcaneness,
  • Imporosity,
  • mystification,
  • impassability,
  • callousness,
  • Inscrutableness,
  • uncanniness,
  • opaqueness,
  • vagueness,
  • consistence,
  • Spissitude,
  • Mysteriousness,
  • ambiguity,
  • involvement,
  • intricacy,
  • numinousness,
  • darkness,
  • complexity,
  • Unsearchableness,
  • reconditeness,
  • difficulty,
  • solidness,
  • constipation,
  • deepness,
  • congestion,
  • profoundness.

Antonyms for Impenetrability:

• n.

  • attribute
    perviousness, penetrability.
  • density
    sparsity, thinness, openness.
  • firmness
    movability, weakness, instability, flexibility, infirmity, indefiniteness, softness, uncertainty.
  • Other antonyms:
    straightforwardness, Self-evidence, plainness, clarity, obviousness, intelligibility, transparency, understandability.

Hyponym for Impenetrability:

• n.

  • attribute
    quality.