Indomitable and Impregnable

Indomitable

Indomitable adjective - Incapable of being defeated, overcome, or subdued.
Usage example: an indomitable spirit was needed to endure the rigors of pioneer life

Impregnable is a synonym for indomitable in steadfast topic. In some cases you can use "Impregnable" instead an adjective "Indomitable", when it comes to topics like do, invincible, unconquerable. popular alternative

Nearby Word: indomitably

Impregnable

Impregnable adjective - Incapable of being defeated, overcome, or subdued.
Usage example: an impregnable fortress that had foiled one invader after another over the centuries

Indomitable is a synonym for impregnable in do topic. You can use "Indomitable" instead an adjective "Impregnable", if it concerns topics such as unassailable, unconquerable. popular alternative

Cite this Source
Impregnable and Indomitable. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/indomitable/impregnable
Indomitable & Impregnable. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/indomitable/impregnable>.
Impregnable or Indomitable. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/indomitable/impregnable.
Google Ngram Viewer shows how "indomitable" and "impregnable" have occurred on timeline