111 entries under pitiless topic. ×

1
demoniac(adjective, evil, nasty, harsh, violent)
1
dispassionate(adjective, cold, cruel, unfeeling, unsympathetic)
1
feral(adjective, mean, strong, severe, harsh)
1
gratuitous(adjective, mean, severe, harsh, cruel)
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
hellish(adjective, evil, nasty, harsh, violent)
1
immobile(adjective, intense, cruel, resolute, persistent)
1
indifferent(adjective, mean, hard, harsh, cold)
1
insensitive(adjective, hard, tough, harsh, cruel)
1
iron-fisted(adjective, mean, severe, harsh, cruel)
1
locked in(tough, firm, cruel, determined, reserved)
1
malicious(adjective, animal, mean, nasty, harsh)
1
mean machine(expression, adjective, mean, severe, harsh)
1
monstrous(adjective, severe, evil, nasty, harsh)
1
poignant(adjective, evil, nasty, difficult, harsh)
1
rancorous(adjective, mean, evil, nasty, harsh)
1
revengeful(adjective, mean, evil, nasty, harsh)
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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>