Proof
Proof adjective - (used in combination or as a suffix) able to withstand.
Repellent and proof are semantically related. in impervious topic. In some cases you can use "Repellent" instead an adjective "Proof", when it comes to topics like resistant.
Mutual synonyms
Cite this Source
Repellent and Proof. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/proof/repellent
Proof & Repellent. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/proof/repellent>.
Repellent or Proof. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/proof/repellent.
Google Ngram Viewer shows how "proof" and "repellent" have occurred on timeline