Adventurous
Adventurous adjective - Inclined or willing to take risks.
Impregnable and adventurous are semantically related. In some cases you can use "Impregnable" instead an adjective "Adventurous".
Impregnable
Impregnable adjective - Incapable of being defeated, overcome, or subdued.
Adventurous and impregnable are semantically related. Sometimes you can use "Adventurous" instead an adjective "Impregnable".
Cite this Source
Impregnable and Adventurous. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/adventurous/impregnable
Adventurous & Impregnable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/adventurous/impregnable>.
Impregnable or Adventurous. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/adventurous/impregnable.
Google Ngram Viewer shows how "adventurous" and "impregnable" have occurred on timeline