133 entries under heartless topic. ×

4
unaffected(adjective, hard, tough, careless, cold)
4
unamiable(adjective, cruel, unsympathetic, numb, pitiless)
4
uncordial(adjective, cruel, unsympathetic, numb, pitiless)
4
unrelenting(adjective, animal, mean, hard, tough)
4
vindictive(adjective, mean, severe, nasty, harsh)
4
wanton(adjective, mean, severe, harsh, cruel)
3
compassionless(adjective, mean, hard, severe, attitude)
3
crotchety(adjective, cruel, unsympathetic, numb, pitiless)
3
ferocious(adjective, animal, mean, evil, nasty)
3
iron-hearted(adjective, bad, cold, cruel, aloof)
3
malevolent(adjective, mean, evil, nasty, harsh)
3
steely(adjective, cold, cruel, unsympathetic, pitiless)
3
uncompromising(adjective, mean, hard, tough, severe)
2
coldblooded(adjective, hard, cruel, hardened)
2
cutthroat(adjective, mean, hard, severe, harsh)
2
feral(adjective, mean, rough, harsh, cruel)
2
grim(adjective, animal, mean, tough, severe)
2
having a killer instinct(expression, adjective, idiom, mean, severe)
2
imperturbable(adjective, calm, cool, relaxed, cold)
2
indurated(adjective, hard, cool, careless, indifferent)
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APASmart Define. (2016). unfeeling thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unfeeling/thesaurus/synonyms
ChicagoSmart Define. 2016. "unfeeling thesaurus" https://smartdefine.org/unfeeling/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, unfeeling thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unfeeling/thesaurus/synonyms>.
MLASmart Define. "unfeeling thesaurus" 31 March 2016. Web. 29 September 2026. <https://smartdefine.org/unfeeling/thesaurus/synonyms>