Synonyms|419Antonyms|77|Broader|8Narrower|0Related|352

84 entries under determined topic. ×

4
bullheaded(adjective, strong, hard, tough, firm)
4
headstrong(adjective, resolute, uncompromising, unshakeable)
4
mulish(adjective, mean, strong, hard, tough)
4
stiff(adjective, harsh, cruel, fierce)
4
unwavering(adjective, resolute, uncompromising, unshakeable)
3
hard-nosed(adjective, mean, strong, hard, tough)
3
hardheaded(adjective, strong, hard, tough, firm)
3
harsh(adjective, mean, strong, hard, tough)
3
inconvincible(adjective, resolute, uncompromising, unshakeable)
3
indurate(adjective, mean, hard, resolute)
3
iron-willed(adjective, resolute, uncompromising, unshakeable)
3
perverse(adjective, mean, hard, tough, firm)
3
pigheaded(adjective, mean, hard, tough, firm)
3
resolved(adjective, resolute, uncompromising, unshakeable)
3
rigorous(adjective, strong, hard, tough, harsh)
3
rock-ribbed(adjective, resolute, uncompromising, unshakeable)
3
strong-willed(adjective, resolute, uncompromising, unshakeable)
3
unshakeable(adjective, resolute, uncompromising)
2
fierce(adjective, animal, mean, hard, tough)
2
hardened(adjective, hard, tough, harsh, cruel)
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APASmart Define. (2016). implacable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/implacable/thesaurus/synonyms
ChicagoSmart Define. 2016. "implacable thesaurus" https://smartdefine.org/implacable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, implacable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/implacable/thesaurus/synonyms>.
MLASmart Define. "implacable thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/implacable/thesaurus/synonyms>