不敗的,不易壞的,無瑕的
Indefectible \In`de*fect"i*ble\, a. [Pref. in- not + defectible: cf. F. ind['e]fectible.] 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.