Synonyms|442Antonyms|75|Broader|0Narrower|0Related|180
2
certain(adjective, clear, complete, firm, definite)
2
dauntless(adjective, determined, bold, resolute, confident)
2
decided(adjective, clear, firm, certain, definite)
2
definite(adjective, clear, strong, complete, firm)
2
dependable
2
devoted
2
hardheaded(tough, firm, determined, resolute, obstinate)
2
impregnable(adjective, steady)
2
incontestable(clear, certain, definite, established, accurate)
2
indefatigable
2
inelastic(adjective, determined, resolute, obstinate, uncompromising)
2
invariable
2
inviolable
2
ironclad
2
lasting
2
loyal
2
obsessive
2
peaceful
2
persevering(adjective, strong, tough, firm, determined)
2
pig-headed(adjective, determined, resolute, obstinate, uncompromising)
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APASmart Define. (2015). unshakable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unshakable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unshakable thesaurus" https://smartdefine.org/unshakable/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unshakable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unshakable/thesaurus/synonyms>.
MLASmart Define. "unshakable thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/unshakable/thesaurus/synonyms>