| Inextinguishable (a.) Not capable of being extinguished; extinguishable; unquenchable; as, inextinguishable flame, light, thirst, desire, feuds. Thesaurus Entries deathless, enduring, eternal, everlasting, immortal, imperishable, impregnable, incorruptible, indelible, indestructible, ineffaceable, ineradicable, inexpugnable, invincible, invulnerable, irrefragable, irrepressible, nonperishable, quenchless, undampable, undestroyable, undying, unquenchable |