100 entries under severe topic. ×

1
antagonistic(adjective, mean, nasty, cold)
1
austere(adjective, bleak, ugly, gray)
1
caterwauling(adjective, hard, sharp, flat)
1
craggy(adjective, hard, sharp, flat)
1
creaking(adjective, hard, sharp, flat)
1
croaking(adjective, hard, sharp, flat)
1
disagreeing(adjective, hard, sharp, flat)
1
earsplitting(adjective, hard, sharp, flat)
1
estranged(adjective, nasty, cold, hostile)
1
fierce(adjective, bad, hard, tough)
1
glaring(adjective, hard, sharp, flat)
1
hard-nosed(adjective, hard, evil, rough)
1
hateful(adjective, mean, nasty, cold)
1
incompatible(adjective, hard, sharp, flat)
1
jagged(adjective, hard, sharp, flat)
1
jangling(adjective, hard, sharp, flat)
1
noisy(adjective, hard, sharp, rough)
1
not smooth(expression, adjective, idiom, hard)
1
out-of-key(adjective, hard, sharp, flat)
1
out-of-tune(adjective, hard, sharp, flat)
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APASmart Define. (2016). sour thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sour/thesaurus/synonyms
ChicagoSmart Define. 2016. "sour thesaurus" https://smartdefine.org/sour/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, sour thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sour/thesaurus/synonyms>.
MLASmart Define. "sour thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/sour/thesaurus/synonyms>