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