Synonyms|86Antonyms|0|Broader|0Narrower|0Related|44
2
stubborn
0
armed
0
callous
0
casehardened
0
casemated
0
castellated
0
defended
0
defending
0
defensible
0
defensive
0
dominating
0
hardened
0
impenetrable
0
imperturbable
0
impervious
0
impregnable
0
incontestable
0
indomitable
0
inexpugnable
0
inextinguishable
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APASmart Define. (2015). proof against thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/proof_against/thesaurus/related
ChicagoSmart Define. 2015. "proof against thesaurus" https://smartdefine.org/proof_against/thesaurus/related (accessed September 24, 2026).
HarvardSmart Define 2015, proof against thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/proof_against/thesaurus/related>.
MLASmart Define. "proof against thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/proof_against/thesaurus/related>