Impregnable
Impregnable adjective - Incapable of being defeated, overcome, or subdued.
Unalterable and impregnable are semantically related. In some cases you can use "Unalterable" instead an adjective "Impregnable".
Unalterable
Unalterable adjective - Not capable of changing or being changed.
Impregnable and unalterable are semantically related. Sometimes you can use "Impregnable" instead an adjective "Unalterable".
Nearby Words: unaltered, unalterably
Mutual synonyms
Related pairs
- secure and impregnable
- secure and unalterable
- firm and impregnable
- firm and unalterable
- resolute and impregnable
- resolute and unalterable
- fixed and impregnable
- fixed and unalterable
- fast and impregnable
- fast and unalterable
- steadfast and impregnable
- steadfast and unalterable
- inflexible and impregnable
- inflexible and unalterable
Cite this Source
Unalterable and Impregnable. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/impregnable/unalterable
Impregnable & Unalterable. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/impregnable/unalterable>.
Unalterable or Impregnable. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/impregnable/unalterable.
Google Ngram Viewer shows how "impregnable" and "unalterable" have occurred on timeline