incurability
1. [ noun ] incapability of being cured or healed
Synonyms: incurableness
Related terms: curability curability characteristic
2. [ noun ] incapability of being altered in disposition or habits
Examples:

: "the incurability of his optimism"

Related terms: unalterability
Similar spelling:   insurability
  inscrutability
  inexorability
  incurably
  inexorably
  incurable
  inaugural
  ingraining
  inexorable
  incredibility
  inauguration