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