49 entries under unshakeable topic. ×

5
stern(adjective, severe, determined, serious, resolute)
4
firm(adjective, mean, strong, hard, tough)
4
hard(adjective, mean, strong, tough, harsh)
4
hard-nosed(adjective, mean, strong, hard, tough)
3
incompliant(adjective, determined, resolute, stubborn, uncompromising)
3
indurate(adjective, mean, hard, determined, stiff)
3
pat(adjective, determined, usual, regular, resolute)
3
remorseless(adjective, tough, determined, unreasonable, grim)
3
resolute(adjective, determined, usual, regular, planned)
3
resolved(adjective, deliberate, determined, usual, regular)
3
steadfast(adjective, determined, usual, unreasonable, regular)
3
steely(adjective, strong, hard, tough, determined)
3
strong-willed(adjective, determined, resolute, uncompromising)
3
unswerving(adjective, determined, resolute, uncompromising)
3
unwavering(adjective, determined, resolute, persistent, constant)
3
wilful(adjective, determined, resolute, uncompromising)
2
hardened(adjective, determined, resolute, uncompromising)
2
inconvincible(adjective, determined, resolute, uncompromising)
2
ossified(adjective, determined, resolute, uncompromising)
2
self-opinionated(adjective, determined, resolute, uncompromising)
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APASmart Define. (2015). stiff-necked thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/stiff-necked/thesaurus/synonyms
ChicagoSmart Define. 2015. "stiff-necked thesaurus" https://smartdefine.org/stiff-necked/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, stiff-necked thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/stiff-necked/thesaurus/synonyms>.
MLASmart Define. "stiff-necked thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/stiff-necked/thesaurus/synonyms>