What is another word for impenetrabilities?
Pronunciation: [ɪmpˌɛnɪtɹəbˈɪlɪtiz] (IPA) 
Impenetrabilities are defined as qualities or states of being that are hard or impossible to penetrate. Some synonyms for impenetrabilities include invincibility, insurmountability, and indestructibility. These terms refer to the same difficulty or impossibility of accessing or penetrating an object or concept. Immutability, imperviousness, and durability are other synonyms that describe the same quality of being difficult or impossible to breach or break through. These synonyms may be used interchangeably in contexts where someone or something is being described as impenetrable, invulnerable, or indestructible. Regardless of which synonym is used, the underlying idea is the same - that there is an impenetrable barrier that is difficult or impossible to breach.
