80 entries under sour topic. ×

3
overripe(adjective, corrupt, disgusting, stale)
3
sharp(adjective, hard, bright, nasty, unpleasant)
3
unpleasant(adjective, sharp, nasty, disagreeable, bitter)
3
unsavory(adjective, sharp, nasty, unpleasant, disagreeable)
3
whiffy(adjective, rank, foul, rotten)
2
acetous(adjective, sharp, unpleasant, bitter)
2
acidic(adjective, sharp, unpleasant, bitter)
2
bad-smelling(adjective, corrupt, disgusting, stale)
2
bitter(adjective, bad, sharp, nasty, unpleasant)
2
curdled(adjective, sharp, unpleasant, rank, bitter)
2
purulent(adjective, corrupt, disgusting, stale)
2
vinegary(adjective, sharp, unpleasant, bitter)
1
acerb(adjective, sharp, unpleasant, bitter)
1
acetic(adjective, sharp, unpleasant, bitter)
1
acetose(adjective, sharp, unpleasant, bitter)
1
acid(adjective, sharp, nasty, unpleasant, disagreeable)
1
acidulated(adjective, sharp, unpleasant, bitter)
1
acrid(adjective, sharp, unpleasant, bitter)
1
astringent(adjective, sharp, unpleasant, bitter)
1
biting(adjective, hard, sharp, unpleasant, high)
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APASmart Define. (2015). rancid thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/rancid/thesaurus/synonyms
ChicagoSmart Define. 2015. "rancid thesaurus" https://smartdefine.org/rancid/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, rancid thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/rancid/thesaurus/synonyms>.
MLASmart Define. "rancid thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/rancid/thesaurus/synonyms>