unassailability means the quality of being unassailable. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
unassailability is pronounced /ˌʌnəˌseɪləˈbɪlɪti/.
noun
- The quality of being unassailable.“All the aberrant streaks of his arrogant personality – its reckless rationalism, its world-domineering phantasy and its sectarian fanaticism – joined in an unholy conspiracy to dislodge the Muslim Scripture from its firmly entrenched position as the epitome of historic authenticity and moral unassailability.”