indestructibility

/ˌɪndɪˌstrʌktəˈbɪləti/
noun
  1. The quality of being impossible to destroy or break.
    • Some people believe in the indestructibility of the human spirit.
    • The manufacturer tested the toy's indestructibility by dropping it from a height.
    • The indestructibility of the ancient stone walls amazed the archaeologists.