Impenetrable and Inscrutable

Impenetrable

Impenetrable adjective - Being beyond one's powers to know, understand, or explain.
Usage example: the mysteries of that religion are completely impenetrable to outsiders

Inscrutable is a synonym for impenetrable in incomprehensible topic. In some cases you can use "Inscrutable" instead an adjective "Impenetrable", when it comes to topics like knowledge, unfathomable, unaccountable, unexplainable. popular alternative

Nearby Words: impenetrability, impenetrably

Inscrutable

Inscrutable adjective - Being beyond one's powers to know, understand, or explain.
Usage example: the many inscrutable beliefs of that ancient religion

Impenetrable is a synonym for inscrutable in enigmatic topic. You can use "Impenetrable" instead an adjective "Inscrutable", if it concerns topics such as knowledge, unfathomable, hidden, mysterious. popular alternative

Nearby Word: inscrutability
Cite this Source
Inscrutable and Impenetrable. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/impenetrable/inscrutable
Impenetrable & Inscrutable. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/impenetrable/inscrutable>.
Inscrutable or Impenetrable. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/impenetrable/inscrutable.
Google Ngram Viewer shows how "impenetrable" and "inscrutable" have occurred on timeline