88 entries under cruel topic. ×

5
austere(adjective, strong, hard, tough, severe)
5
brutal(adjective, person, tough, severe, harsh)
5
heartless(adjective, mean, severe, harsh)
5
inflexible(adjective, strong, hard, tough, severe)
5
obdurate(adjective, close, strong, hard, tough)
5
rigid(adjective, strong, hard, tough, severe)
5
unfeeling(adjective, person, mean, tough, severe)
4
dour(adjective, close, hard, tough, severe)
4
extravagant(adjective, harsh, grand, generous)
4
uncompromising(adjective, hard, severe, harsh)
3
callous(adjective, mean, tough, severe, harsh)
3
cold(adjective, close, hard, tough, severe)
3
difficult(adjective, tough, rough, harsh, heavy)
3
grim(adjective, mean, strong, hard, tough)
3
inhumane(adjective, person, mean, severe, harsh)
3
remorseless(adjective, severe, harsh, persistent)
3
unbending(adjective, close, strong, hard, tough)
3
unkind(adjective, tough, severe, harsh)
3
unyielding(adjective, mean, strong, hard, tough)
2
astringent(adjective, close, strong, hard, tough)
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APASmart Define. (2016). unsparing thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/unsparing/thesaurus/synonyms
ChicagoSmart Define. 2016. "unsparing thesaurus" https://smartdefine.org/unsparing/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, unsparing thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/unsparing/thesaurus/synonyms>.
MLASmart Define. "unsparing thesaurus" 24 March 2016. Web. 1 October 2026. <https://smartdefine.org/unsparing/thesaurus/synonyms>