180 entries under tough topic. ×

22
relentless(adjective, characteristic, mean, strong, hard)
21
dour(adjective, characteristic, severe, nasty)
21
grim(adjective, characteristic, appearance, mean, strong)
21
sour(adjective, characteristic, hard, severe)
21
unfeeling(adjective, characteristic, mean, hard, cool)
20
exacting(adjective, characteristic, hard, easy)
20
oppressive(adjective, characteristic, hard, severe)
20
rugged(adjective, characteristic, strong, hard, smooth)
20
savage(adjective, characteristic, mean, hard)
20
tyrannical(adjective, characteristic, hard, severe)
19
merciless(adjective, mean, hard, severe)
19
acid(noun, adjective, characteristic, sharp)
19
bleak(adjective, characteristic, hard, severe)
19
coarse(adjective, characteristic, hard, smooth, simple)
19
extreme(adjective, characteristic, strong, hard, great)
19
fierce(adjective, characteristic, mean, strong, hard)
19
unpleasant(adjective, characteristic, mean, hard, cool)
19
unrelenting(adjective, characteristic, mean, strong, hard)
19
violent(adjective, strong, hard, severe)
15
callous(adjective, characteristic, mean, hard, cool)
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APASmart Define. (2016). harsh thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/harsh/thesaurus/synonyms
ChicagoSmart Define. 2016. "harsh thesaurus" https://smartdefine.org/harsh/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, harsh thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/harsh/thesaurus/synonyms>.
MLASmart Define. "harsh thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/harsh/thesaurus/synonyms>