unbreakableness

/ˌʌnˈbreɪkəbəlnəs/
noun
  1. The quality or state of being impossible to break or damage.
    • The unbreakableness of the new smartphone screen impressed everyone.
    • Engineers tested the unbreakableness of the bridge materials under extreme stress.
    • Her unbreakableness of spirit helped her overcome many challenges.
Antonyms
What does "unbreakableness" mean? | whatsthatwordmean | whatsthatwordmean