indefectible
a. தோல்வியுறாத, தவறாத, கெடாத, குற்றமற்ற, மாசற்ற.
In`de*fect"i*ble, a. Etym: [Pref. in- not + defectible: cf. F. indéfectible.] Defn: Not defectible; unfailing; not liable to defect, failure, or decay. An indefectible treasure in the heavens. Barrow. A state of indefectible virtue and happiness. S. Clarke.