Impregnable
Impregnable adjective - Incapable of being defeated, overcome, or subdued.
Undoubted and impregnable are semantically related. In some cases you can use "Undoubted" instead an adjective "Impregnable".
Undoubted
Impregnable and undoubted are semantically related. Sometimes you can use "Impregnable" instead an adjective "Undoubted".
Nearby Word: undoubtedly
Mutual synonyms
Related pairs
- sound and impregnable
- sound and undoubted
- firm and impregnable
- firm and undoubted
- fixed and impregnable
- fixed and undoubted
- hard and impregnable
- hard and undoubted
- unquestionable and impregnable
- unquestionable and undoubted
- absolute and impregnable
- absolute and undoubted
- indisputable and impregnable
- indisputable and undoubted
Cite this Source
Undoubted and Impregnable. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/impregnable/undoubted
Impregnable & Undoubted. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/impregnable/undoubted>.
Undoubted or Impregnable. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/impregnable/undoubted.
Google Ngram Viewer shows how "impregnable" and "undoubted" have occurred on timeline