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