65 entries under determined topic. ×

3
stern(adjective, resolute, uncompromising, unshakeable)
3
willful(adjective, fixed, resolute, stubborn)
2
dogged(adjective, fixed, resolute, stubborn)
2
fixed(adjective, set, hard, complete, firm)
2
grim(adjective, hard, tough, harsh, cruel)
2
headstrong(adjective, fixed, resolute, uncompromising)
2
immovable(adjective, fixed, resolute, stubborn)
2
implacable(adjective, hard, tough, harsh, cruel)
2
inconvincible(adjective, resolute, uncompromising, unshakeable)
2
intractable(adjective, fixed, persistent, stubborn)
2
pat(adjective, resolute, uncompromising, unshakeable)
2
persistent(usual, fixed, stubborn, established)
2
pertinacious(adjective, fixed, resolute, stubborn)
2
perverse(adjective, fixed, resolute, stubborn)
2
pigheaded(adjective, fixed, resolute, stubborn)
2
self-opinionated(adjective, resolute, uncompromising, unshakeable)
2
self-willed(adjective, fixed, resolute, stubborn)
2
stiff-necked(adjective, resolute, uncompromising, unshakeable)
1
bullheaded(adjective, resolute, uncompromising, unshakeable)
1
cantankerous(adjective, hard, tough, severe, cruel)
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APASmart Define. (2016). hardened thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/hardened/thesaurus/synonyms
ChicagoSmart Define. 2016. "hardened thesaurus" https://smartdefine.org/hardened/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, hardened thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/hardened/thesaurus/synonyms>.
MLASmart Define. "hardened thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/hardened/thesaurus/synonyms>