171 entries under cruel topic. ×

1
demoniac(adjective, evil, nasty, harsh, violent)
1
devilish(adjective, animal, mean, harsh, violent)
1
diabolical(adjective, animal, mean, harsh, violent)
1
dispassionate(adjective, cold, unfeeling, unsympathetic)
1
feral(adjective, mean, strong, severe, harsh)
1
frightful(adjective, appearance, violent, terrible)
1
gratuitous(adjective, mean, severe, harsh)
1
hang-tough(adjective, strong, hard, tough, severe)
1
hard-boiled(adjective, mean, strong, hard, tough)
1
hatchet job(expression, adjective, mean, severe, harsh)
1
hateful(adjective, animal, mean, evil, nasty)
1
having a killer instinct(expression, adjective, idiom, mean, severe)
1
heavy(adjective, strong, hard, tough, severe)
1
hellish(adjective, evil, nasty, harsh, violent)
1
immobile(adjective, intense, resolute, persistent)
1
insensitive(adjective, hard, tough, harsh)
1
iron-fisted(adjective, mean, severe, harsh)
1
locked in(tough, firm, determined, reserved)
1
lupine(adjective, violent, vicious, fierce)
1
malicious(adjective, animal, mean, nasty, harsh)
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APASmart Define. (2015). relentless thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/relentless/thesaurus/synonyms
ChicagoSmart Define. 2015. "relentless thesaurus" https://smartdefine.org/relentless/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, relentless thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/relentless/thesaurus/synonyms>.
MLASmart Define. "relentless thesaurus" 24 June 2015. Web. 29 September 2026. <https://smartdefine.org/relentless/thesaurus/synonyms>