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

298 entries under adjective topic. ×

6
revengeful(mean, evil, nasty, harsh)
6
savage(animal, mean, hard, tough)
6
severe(appearance, mean, strong, hard)
6
tough(mean, strong, hard, firm)
6
unflinching(mean, severe, harsh, cruel)
6
unmerciful(mean, hard, tough, severe)
5
brassbound(resist, determined, resolute, persistent)
5
die-hard(resist, determined, resolute, persistent)
5
ferocious(animal, mean, evil, nasty)
5
stony(mean, hard, harsh, cold)
5
unbendable(resist, determined, resolute, persistent)
5
unchangeable(hard, resolute, rigid, inflexible)
5
unsympathetic(animal, mean, hard, severe)
5
vengeful(mean, severe, evil, nasty)
4
irreconcilable(hostile, conflicting)
4
bullheaded(strong, hard, tough, firm)
4
callous(mean, hard, severe, evil)
4
deadly
4
headstrong(determined, resolute, uncompromising, unshakeable)
4
mulish(mean, strong, hard, tough)
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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>