Impregnable
Impregnable adjective - Incapable of being defeated, overcome, or subdued.
Jammed and impregnable are semantically related. In some cases you can use "Jammed" instead an adjective "Impregnable".
Jammed
Jammed adjective - Containing or seeming to contain the greatest quantity or number possible.
Impregnable and jammed are semantically related. Sometimes you can use "Impregnable" instead an adjective "Jammed".
Cite this Source
Jammed and Impregnable. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/impregnable/jammed
Impregnable & Jammed. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/impregnable/jammed>.
Jammed or Impregnable. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/impregnable/jammed.
Google Ngram Viewer shows how "impregnable" and "jammed" have occurred on timeline