449 entries under adjective topic. ×

4
unsparing(mean, strong, hard, tough)
4
wilful(determined, resolute, uncompromising, unshakeable)
3
bound and determined(expression, idiom, harsh, cruel)
3
brutish(evil, nasty, harsh, violent)
3
dead set(determined, resolute, uncompromising, unshakeable)
3
dismal
3
fierce(animal, mean, hard, tough)
3
forbidding(close, appearance, strong, hard)
3
ghastly(appearance, terrible, hopeless)
3
gloomy
3
grisly(appearance, terrible, hopeless)
3
gruesome(appearance, terrible, hopeless)
3
inclement(tough, harsh, cruel, grim)
3
inelastic(determined, resolute, obstinate, uncompromising)
3
iron-willed(determined, resolute, uncompromising, unshakeable)
3
perseverant
3
regular(persistent, constant, continuous, endless)
3
resistant(determined, resolute, obstinate, uncompromising)
3
robust(strong, hard, tough, sturdy)
3
rude(hard, severe, sharp, nasty)
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APASmart Define. (2015). unrelenting thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unrelenting/thesaurus/synonyms
ChicagoSmart Define. 2015. "unrelenting thesaurus" https://smartdefine.org/unrelenting/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, unrelenting thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unrelenting/thesaurus/synonyms>.
MLASmart Define. "unrelenting thesaurus" 3 August 2015. Web. 28 September 2026. <https://smartdefine.org/unrelenting/thesaurus/synonyms>