inexpugnable

adjective

in·​ex·​pug·​na·​ble ˌi-nik-ˈspəg-nə-bəl 

-ˈspyü-nə-

1

: incapable of being subdued or overthrown : impregnable

an inexpugnable position

2

: stable, fixed

inexpugnable hatred

inexpugnableness noun

inexpugnably

ˌi-nik-ˈspəg-nə-blē 

-ˈspyü-nə-

adverb

Synonyms

• certain
• determinate
• final
• firm
• fixed
• flat
• frozen
• hard
• hard-and-fast
• set
• settled
• stable

Examples of inexpugnable in a Sentence

an inexpugnable belief in the essential goodness of people

Recent Examples on the Web

Both felonies would be inexpugnable. —cleveland, 4 Aug. 2020

Word History

Etymology

Middle English in-expungnabull, from Latin inexpugnabilis, from in- + expugnare to take by storm, from ex- + pugnare to fight — more at pungent

First Known Use

15th century, in the meaning defined at sense 1