87 entries under heartless topic. ×

27
malevolent(adjective, characteristic, person, mean, strong)
27
inhumane(adjective, characteristic, person, mean, hard)
25
unsympathetic(adjective, person, mean, hard, cool)
24
hard-hearted(adjective, characteristic, person, mean, hard)
23
grim(adjective, person, appearance, mean, strong)
21
unmerciful(adjective, characteristic, mean, severe, harsh)
20
inexorable(adjective, characteristic, appearance, mean, strong)
20
stubborn(adjective, appearance, strong, hard, tough)
19
hardhearted(adjective, characteristic, person, mean, hard)
19
relentless(adjective, characteristic, appearance, mean, strong)
17
sadistic(adjective, adverb, characteristic, mean, nasty)
16
remorseless(adjective, mean, severe, harsh, violent)
16
stern(adjective, person, appearance, mean, hard)
16
unrelenting(adjective, characteristic, appearance, mean, strong)
15
unyielding(adjective, characteristic, appearance, mean, strong)
14
implacable(adjective, characteristic, appearance, mean, strong)
14
vindictive(adjective, characteristic, person, mean, severe)
13
insensitive(adjective, person, mean, hard, cool)
12
uncompassionate(adjective, mean, hard, cool, tough)
12
unforgiving(adjective, mean, hard, severe, rough)
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APASmart Define. (2016). cruel thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/cruel/thesaurus/synonyms
ChicagoSmart Define. 2016. "cruel thesaurus" https://smartdefine.org/cruel/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, cruel thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/cruel/thesaurus/synonyms>.
MLASmart Define. "cruel thesaurus" 24 March 2016. Web. 29 September 2026. <https://smartdefine.org/cruel/thesaurus/synonyms>