Impregnable
Impregnable adjective - Incapable of being defeated, overcome, or subdued.
Venturous and impregnable are semantically related. In some cases you can use "Venturous" instead an adjective "Impregnable".
Venturous
Venturous adjective - Inclined or willing to take risks.
Impregnable and venturous are semantically related. Sometimes you can use "Impregnable" instead an adjective "Venturous".
Cite this Source
Venturous and Impregnable. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/impregnable/venturous
Impregnable & Venturous. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/impregnable/venturous>.
Venturous or Impregnable. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/impregnable/venturous.
Google Ngram Viewer shows how "impregnable" and "venturous" have occurred on timeline