indefectible
Immune to fault
Indefectible means incapable of failing or being flawed.
The term appears most often in theological contexts, describing something that cannot fall away from truth or grace: the indefectible authority of the Church.
More broadly, it describes anything unfailing or immune to defect: an indefectible commitment to justice.
The word is formal and rare outside religious or philosophical writing.
Never failing or weakening
- dependableWorthy of trust
- trustworthyWorthy of confidence
- steadfastFirmly loyal, unshakeable
- unwaveringSteady and unchanging
unerring · consistent · faithful · sure · certain · guaranteed · foolproof · secure
Free from any defect
- faultlessFree from any defect
- perfectWithout any flaw
- immaculateCompletely without blemish
- unblemishedFree from any defect
pristine · spotless · pure · untarnished · unsullied · ideal · exquisite · unmarred
Fixed without end
- eternalLasting without end
- everlastingLasting for all time
- perpetualLasting without interruption
- imperishableLasting forever, indestructible
indestructible · undying · timeless · ageless · unfading · lasting · abiding · unending
unfailing
Never failing or weakening
- dependableWorthy of trust
- trustworthyWorthy of confidence
- steadfastFirmly loyal, unshakeable
unwavering · unerring · consistent · faithful · sure · certain · guaranteed · foolproof · secure · stable
impeccable
Free from any defect
- faultlessFree from any defect
- perfectWithout any flaw
- immaculateCompletely without blemish
unblemished · pristine · spotless · pure · untarnished · unsullied · ideal · exquisite · unmarred · unimpaired
permanent
Fixed without end
- eternalLasting without end
- everlastingLasting for all time
- perpetualLasting without interruption
imperishable · indestructible · undying · timeless · ageless · unfading · lasting · abiding · unending · ceaseless
indefectiblefallible
Capable of error
unreliable · failing · fragile · vulnerable · precarious
defect, perfection, defective, undefeated, defection, indefeasible