196 entries under tough topic. ×

14
adamantine(adjective, strong, hard, resist)
14
rigid(adjective, strong, hard, severe)
14
serious(adjective, dull, strong, hard)
13
cold(adjective, person, mean, severe)
12
unforgiving(adjective, mean, hard, severe)
11
adamant(adjective, mean, strong, hard)
11
merciless(adjective, appearance, mean, hard)
11
ruthless(adjective, animal, appearance, mean, hard)
11
sour(adjective, appearance, hard, severe)
10
angry(adjective, state, characteristic, person)
10
iron(adjective, firm, resist, determined)
10
remorseless(adjective, animal, mean, harsh)
9
fierce(adjective, animal, appearance, mean, hard)
9
frightening(adjective, offensive, dark, awful)
9
inhuman(adjective, animal, mean, hard)
9
vindictive(adjective, person, mean, hard)
8
dogged(adjective, appearance, harsh, cruel)
8
inhumane(adjective, animal, person, mean, hard)
8
pitiless(adjective, animal, mean, hard)
8
savage(adjective, animal, mean, hard)
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APASmart Define. (2016). grim thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/grim/thesaurus/synonyms
ChicagoSmart Define. 2016. "grim thesaurus" https://smartdefine.org/grim/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, grim thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/grim/thesaurus/synonyms>.
MLASmart Define. "grim thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/grim/thesaurus/synonyms>