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