3
relentless(adjective, characteristic, cruel, merciless, pitilessness)
3
sinful(adjective, characteristic, pitilessness, inhumanity)
3
tyrannical(adjective, characteristic, pitilessness, inhumanity)
3
unsusceptible(adjective, characteristic, mean, cool, susceptible)
3
wicked(adjective, characteristic, pitilessness, inhumanity)
2
depraved(adjective, characteristic, pitilessness, inhumanity)
2
emotionless(adjective, emotional, unfeeling, undemonstrative)
2
excruciating(adjective, characteristic, pitilessness, inhumanity)
2
ferocious(adjective, characteristic, pitilessness, inhumanity)
2
fierce(adjective, characteristic, pitilessness, inhumanity)
2
flinty(adjective, characteristic, pitilessness, inhumanity)
2
hard-bitten
2
hard-boiled
2
ill-natured
2
inconsiderate(adjective, person, positive)
2
inharmonious
2
insensate
2
ironhearted
2
malignant
2
masculine
10 years ago|6.7k views|share |citing 
APASmart Define. (2016). sympathetic thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sympathetic/thesaurus/antonyms
ChicagoSmart Define. 2016. "sympathetic thesaurus" https://smartdefine.org/sympathetic/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, sympathetic thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sympathetic/thesaurus/antonyms>.
MLASmart Define. "sympathetic thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/sympathetic/thesaurus/antonyms>