In`de*fect"i*ble (?), a. [Pref. in- not + defectible: cf. F. ind'efectible.]
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.
© Webster 1913.