inextinguishable
131invulnerable — Synonyms and related words: armed, cloaked, copyrighted, covered, deathless, defended, dependable, fail safe, firm, guaranteed, guarded, harmless, immortal, impenetrable, imperishable, impregnable, incontestable, incorruptible, indelible,… …
132nonperishable — Synonyms and related words: deathless, immortal, imperishable, impregnable, incorruptible, indelible, indestructible, ineffaceable, ineradicable, inexpugnable, inextinguishable, invincible, invulnerable, quenchless, undampable, undestroyable,… …
