710 entries under adjective topic. ×

5
strident(hard, severe, sharp, rough)
5
strong(sharp, powerful, rank, corrupt)
5
tainted
5
unharmonious
4
acetic(bitter, acid, tart, astringent)
4
acidulent
4
bearish(difficult, irritable, critical, crabby)
4
curdled(dull, rank, disagreeable, bitter)
4
curmudgeonly
4
curt
4
depressed(low, feelings, gloomy, miserable)
4
displeasing(quiet, bad, nasty, offensive)
4
down in the dumps(expression, feelings, gloomy, depressed)
4
fermented(bitter, acid, tart, astringent)
4
foul(rank, disgusting, horrible, disagreeable)
4
fretful(tough, difficult, harsh, awkward)
4
frowning(low, gloomy, miserable, depressed)
4
gamy
4
good
4
high
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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>