Impregnable and Permeable

Opposite meaning words

Impregnable adjective - Impossible to get through or into.

Usage example: the castle's supposedly impregnable walls

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Permeable is an antonym for impregnable.

Permeable adjective - Capable of being passed into or through.

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Impregnable is an antonym for permeable.

Nearby Words: permeated, permeating, permeation, permeability, permeance

Cite this Source

Permeable and Impregnable. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/impregnable/permeable

Impregnable & Permeable. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/impregnable/permeable>.

Permeable or Impregnable. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/impregnable/permeable.

Google Ngram Viewer shows how "impregnable" and "permeable" have occurred on timeline