indefectible

1 of 2

adjective

in·​de·​fec·​ti·​ble ˌin-di-ˈfek-tə-bəl How to pronounce indefectible (audio)
Synonyms of indefectiblenext
1
: not subject to failure or decay : lasting
2
: free of faults : flawless
indefectibility noun
indefectibly adverb

indefectibility

2 of 2

noun

in·​de·​fec·​ti·​bil·​i·​ty ¦ində̇ˌfektə¦bilətē How to pronounce indefectibility (audio)
-(ˌ)dēˌ-
-ətē
-i
: the quality or state of being indefectible

Examples of indefectible in a Sentence

Adjective the indefectible logic of the polemist's arguments

Word History

First Known Use

Adjective

1659, in the meaning defined at sense 1

Time Traveler
The first known use of indefectible was in 1659

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Cite this Entry

“Indefectible.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/indefectible. Accessed 23 Jun. 2026.

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