Arduous and Impregnable

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Arduous adjective - Requiring considerable physical or mental effort.

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Impregnable and arduous are semantically related. In some cases you can use "Impregnable" instead an adjective "Arduous".

Nearby Word: arduously

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

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Arduous and impregnable are semantically related. Sometimes you can use "Arduous" instead an adjective "Impregnable".

Cite this Source

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

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

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

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