Impermeable
Impermeable adjective - Impossible to get through or into.
Usage example: the wall of security people surrounding the rock band was impermeable
Stiff and impermeable are semantically related. In some cases you can use "Stiff" instead an adjective "Impermeable".
Nearby Word: impermeability
Stiff
Stiff adjective - Having a consistency that does not easily yield to pressure.
Usage example: stir two cups of flour with the remaining ingredients to make a stiff dough
Impermeable and stiff are semantically related. Sometimes you can use "Impermeable" instead an adjective "Stiff".
Cite this Source
Stiff and Impermeable. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/impermeable/stiff
Impermeable & Stiff. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/impermeable/stiff>.
Stiff or Impermeable. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/impermeable/stiff.
Google Ngram Viewer shows how "impermeable" and "stiff" have occurred on timeline