Impenetrable and Narrow

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Impenetrable adjective - Impossible to get through or into.

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Narrow and impenetrable are semantically related. In some cases you can use "Narrow" instead an adjective "Impenetrable".

Narrow adjective - Being of less than usual width.

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Impenetrable and narrow are semantically related. Sometimes you can use "Impenetrable" instead an adjective "Narrow".

Cite this Source

Narrow and Impenetrable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/impenetrable/narrow

Impenetrable & Narrow. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/impenetrable/narrow>.

Narrow or Impenetrable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/impenetrable/narrow.

Google Ngram Viewer shows how "impenetrable" and "narrow" have occurred on timeline