91 entries under tough topic. ×

20
inexorable(adjective, characteristic, appearance, mean, strong)
20
rugged(adjective, strong, hard, severe)
20
stubborn(adjective, appearance, strong, hard)
20
violent(adjective, strong, hard, severe)
19
hard-nosed(adjective, strong, hard, severe)
19
relentless(adjective, characteristic, appearance, mean, strong)
19
serious(adjective, strong, hard, severe)
16
bitter(adjective, characteristic, mean, strong, hard)
16
inconsiderate(adjective, person, mean, hard)
16
tyrannical(adjective, characteristic, hard, nasty)
16
unrelenting(adjective, characteristic, appearance, mean, strong)
15
unyielding(adjective, characteristic, appearance, mean, strong)
14
flinty(adjective, characteristic, strong, hard)
14
implacable(adjective, characteristic, appearance, mean, strong)
13
insensitive(adjective, person, mean, hard, cool)
12
uncompassionate(adjective, mean, hard, cool)
11
sanguinary(adjective, hard, harsh, violent)
11
unpleasant(adjective, characteristic, mean, hard, cool)
11
unsparing(adjective, mean, strong, hard)
9
cold-hearted(adjective, person, hard, severe)
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APASmart Define. (2016). cruel thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/cruel/thesaurus/synonyms
ChicagoSmart Define. 2016. "cruel thesaurus" https://smartdefine.org/cruel/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, cruel thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/cruel/thesaurus/synonyms>.
MLASmart Define. "cruel thesaurus" 24 March 2016. Web. 30 September 2026. <https://smartdefine.org/cruel/thesaurus/synonyms>