Proof
Proof adjective - (used in combination or as a suffix) able to withstand.
Strong and proof are semantically related. in impervious topic. In some cases you can use "Strong" instead an adjective "Proof".
Mutual synonyms
Both words in one sentence
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This makes him effectively bullet-proof, rocket and grenade-proof, and can even absorb the energy of your punches, no matter how strong you are.
Source: Film / X-Men Film Series -
Sadly, he pretty much just exists so Shen's cannon can kill someone strong as proof of its power.
Source: Rhino Rampage -
Well, your faith was strong but you needed proof You saw her bathing on the roof Her beauty and the moonlight overthrew ya.
Source: Outdoor Bath Peeping
Cite this Source
Strong and Proof. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/proof/strong
Proof & Strong. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/proof/strong>.
Strong or Proof. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/proof/strong.
Google Ngram Viewer shows how "proof" and "strong" have occurred on timeline