What is another word for impenetrableness?
Pronunciation: [ɪmpˈɛnɪtɹəbə͡lnəs] (IPA) 
Impenetrableness refers to the quality of being impossible to penetrate or enter. It is a word that describes something that is extremely solid, dense, or resistant to any attempt to pass through it. Synonyms for impenetrableness include imperviousness, impermeability, indestructibility, solidity, hardness, toughness, rigidity, and strength. These words describe the unyielding nature of materials or obstacles that cannot be broken, damaged, or compromised. They also convey a sense of permanence and durability, suggesting that the object possessing these qualities will endure for a long time without yielding to external pressures or forces. Overall, synonyms for impenetrableness capture the essence of steadfastness, resilience, and durability that we associate with unyielding objects or situations.
