Impregnable and Open

Opposite meaning words

Impregnable adjective - Incapable of being defeated, overcome, or subdued.

Usage example: an impregnable fortress that had foiled one invader after another over the centuries

Show all Definitions

Open is an antonym for impregnable in invulnerable topic.

Open adjective - Allowing passage without obstruction.

Show all Definitions

Impregnable is an antonym for open.

Nearby Words: opening, openness, opened, opener

Cite this Source

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

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

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

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