Acid-fast
Acid-fast adjective - Not easily decolorized by acid solutions; pertains to micro-organisms (especially the tubercle bacillus that causes tuberculosis).
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Synonyms for Acid-fast
Impervious and acid-fast are semantically related. In some cases you can use "Impervious" instead an adjective phrase "Acid-fast".
Impervious
Impervious adjective - Not admitting of passage or capable of being affected.
Usage example: a material impervious to water
Acid-fast and impervious are semantically related. You can use "Acid-fast" instead an adjective "Impervious".
Nearby Word: imperviously
Mutual synonyms
Cite this Source
Impervious and Acid-fast. (2017). Retrieved 2026, July 31, from https://thesaurus.plus/related/acid-fast/impervious
Acid-fast & Impervious. N.p., 2017. Web. 31 Jul. 2026. <https://thesaurus.plus/related/acid-fast/impervious>.
Impervious or Acid-fast. 2017. Accessed July 31, 2026. https://thesaurus.plus/related/acid-fast/impervious.
