196 entries under tough topic. ×

8
unkind(adjective, animal, person, mean, hard)
7
foreboding(adjective, appearance, sad, offensive)
7
frowning(adjective, dull, strong, hard)
7
strict(adjective, strong, hard, severe)
6
antagonistic(adjective, person, severe, harsh)
6
astringent(adjective, strong, hard, severe)
6
barbarous(adjective, animal, appearance, mean, hard)
6
cold-blooded(adjective, person, mean, harsh)
6
demanding(adjective, severe, difficult, harsh)
6
difficult(adjective, severe, harsh, unhappy)
6
exacting(adjective, severe, firm, harsh)
6
firm(adjective, strong, hard, severe)
6
hostile(adjective, severe, harsh, dark)
6
immovable(adjective, strong, hard, determined)
6
rigorous(adjective, strong, hard, severe)
6
stiff-necked(adjective, strong, hard, severe)
6
stringent(adjective, severe, firm, harsh)
6
unpleasant(adjective, mean, hard, severe)
6
unsympathetic(adjective, animal, person, mean)
5
acrimonious(adjective, severe, harsh, cruel)
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APASmart Define. (2016). grim thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/grim/thesaurus/synonyms
ChicagoSmart Define. 2016. "grim thesaurus" https://smartdefine.org/grim/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, grim thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/grim/thesaurus/synonyms>.
MLASmart Define. "grim thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/grim/thesaurus/synonyms>