indefectible

adjective

in·​de·​fec·​ti·​ble ˌin-di-ˈfek-tə-bəl 

1

: not subject to failure or decay : lasting

2

: free of faults : flawless

indefectibility

ˌin-di-ˌfek-tə-ˈbi-lə-tē 

noun

indefectibly

ˌin-di-ˈfek-tə-blē 

adverb

Synonyms

• absolute
• faultless
• flawless
• ideal
• immaculate
• impeccable
• irreproachable
• letter-perfect
• perfect
• picture-book
• picture-perfect
• seamless
• unblemished

Examples of indefectible in a Sentence

the indefectible logic of the polemist's arguments

Word History

First Known Use

1659, in the meaning defined at sense 1