169 entries under pitiless topic. ×

4
unmoved(adjective, cold, cruel, unfeeling, unsympathetic)
3
apathetic(adjective, person, hard, tough, severe)
3
crude(adjective, rough, violent, cruel, vicious)
3
evil(adjective, nasty, harsh, corrupt, vicious)
3
exacting(adjective, hard, tough, severe, rough)
3
gratuitous(adjective, mean, cruel, senseless)
3
hardened(adjective, person, hard, tough, severe)
3
sadistic(adjective, mean, evil, nasty, harsh)
3
thick-skinned(adjective, hard, tough, severe, cruel)
3
unflinching(adjective, mean, harsh, cruel, determined)
2
aggressive(adjective, nasty, violent, cruel, vicious)
2
bitter(adjective, evil, nasty, harsh, unpleasant)
2
depraved(adjective, evil, nasty, harsh, corrupt)
2
dogged(adjective, appearance, harsh, terrible, cruel)
2
icy(adjective, hard, tough, severe, cold)
2
intransigent(adjective, persistent, constant, unyielding)
2
rancorous(adjective, mean, evil, nasty, harsh)
2
sinful(adjective, evil, nasty, harsh, corrupt)
2
steely(adjective, cold, cruel, unfeeling, unsympathetic)
2
virulent(adjective, evil, nasty, harsh, vicious)
10 years ago|15k views|share |citing 
APASmart Define. (2016). merciless thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/merciless/thesaurus/synonyms
ChicagoSmart Define. 2016. "merciless thesaurus" https://smartdefine.org/merciless/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, merciless thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/merciless/thesaurus/synonyms>.
MLASmart Define. "merciless thesaurus" 31 March 2016. Web. 29 September 2026. <https://smartdefine.org/merciless/thesaurus/synonyms>