124 entries under mean topic. ×

8
brutal(adjective, strong, severe, evil)
8
callous(adjective, hard, severe, evil)
8
heartless(adjective, hard, severe, evil)
8
unsparing(adjective, strong, hard, tough)
7
ferocious(adjective, animal, strong, severe)
7
hanging tough(expression, adjective, hard, determined)
7
mulish(adjective, strong, hard, tough)
6
hard-hearted(adjective, hard, tough, evil)
6
unfeeling(adjective, animal, hard, severe)
6
unsympathetic(adjective, animal, hard, severe)
5
mortal(adjective, severe, harsh, cruel)
4
cutthroat(adjective, strong, hard, severe)
4
pigheaded(adjective, hard, tough, determined)
4
unpitying(adjective, severe, harsh, cruel)
3
barbarous(adjective, animal, appearance, strong)
3
cold-blooded(adjective, hard, evil, nasty)
3
indurate(adjective, hard, determined, resolute)
3
perverse(adjective, hard, tough, determined)
3
uncompassionate(adjective, animal, hard, harsh)
3
uncooperative(adjective, hard, persistent, obstinate)
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APASmart Define. (2015). relentless thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/relentless/thesaurus/synonyms
ChicagoSmart Define. 2015. "relentless thesaurus" https://smartdefine.org/relentless/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, relentless thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/relentless/thesaurus/synonyms>.
MLASmart Define. "relentless thesaurus" 24 June 2015. Web. 25 September 2026. <https://smartdefine.org/relentless/thesaurus/synonyms>