84 entries under grim topic. ×

1
fierce(adjective, bad, hard, tough, severe)
1
glaring(adjective, hard, severe, sharp, flat)
1
hard-bitten(adjective, hard, tough, harsh, cruel)
1
hard-hearted(adjective, hard, tough, harsh, cruel)
1
hardened(adjective, hard, tough, harsh, cruel)
1
impenitent(adjective, hard, tough, harsh, cruel)
1
implacable(adjective, hard, tough, harsh)
1
incompatible(adjective, hard, severe, sharp, flat)
1
inexorable(adjective, hard, tough, harsh)
1
inhuman(adjective, hard, tough, harsh, cruel)
1
inhumane(adjective, hard, tough, harsh, cruel)
1
insensitive(adjective, hard, tough, harsh, cruel)
1
intolerant(adjective, hard, tough, harsh, cruel)
1
jagged(adjective, hard, severe, sharp, flat)
1
jangling(adjective, hard, severe, sharp, flat)
1
merciless(adjective, hard, tough, harsh)
1
murderous(adjective, hard, tough, harsh, cruel)
1
noisy(adjective, hard, severe, sharp, rough)
1
not smooth(expression, adjective, idiom, hard, severe)
1
out-of-key(adjective, hard, severe, sharp, flat)
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APASmart Define. (2016). sour thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/sour/thesaurus/synonyms
ChicagoSmart Define. 2016. "sour thesaurus" https://smartdefine.org/sour/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, sour thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/sour/thesaurus/synonyms>.
MLASmart Define. "sour thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/sour/thesaurus/synonyms>