86 entries under harsh topic. ×

11
tangy(adjective, strong, taste, sharp)
10
grim(adjective, appearance, hard, tough, severe)
9
vinegary(adjective, sharp, difficult, bitter)
8
astringent(adjective, hard, severe, sharp, rough)
8
crotchety(adjective, tough, difficult, feelings)
7
acetous(adjective, taste, sharp, bitter)
7
ill-humored(adjective, tough, difficult, feelings)
6
cynical(adjective, tough, sharp, gloomy)
6
forbidding(adjective, hard, tough, severe)
5
brusque(adjective, tough, low, gloomy)
5
cacophonous(adjective, hard, severe, sharp, rough)
5
severe(adjective, hard, sharp, flat, rough)
4
fretful(adjective, tough, difficult, awkward)
4
prickly(adjective, tough, difficult, awkward)
4
splenetic(adjective, tough, gloomy, depressed)
3
hard(adjective, tough, severe, evil, sharp)
3
perverse(adjective, tough, difficult, gloomy)
3
scratchy(adjective, informal)
3
unsociable(adjective, mean, tough, nasty)
3
vinegarish(adjective, difficult, crabby, cranky)
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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>