126 entries under verb topic. ×

12
curdle(action, dull, turn, spoil)
12
cutting(adjective, strong, sharp, property)
12
turn(action, spoil, decay, sour)
11
acidify(action, dull, work, turn)
9
acidulate(upset, poison, alienate, disillusion)
9
ferment(action, dull, turn, provoke)
9
spoil(action, dull, turn, decay)
8
embitter(upset, turn, happy, poison)
7
acetify
7
envenom(action, upset, turn, poison)
6
exasperate(upset, bother, turn, annoy)
6
go off(expression, phrasal verb, turn, spoil)
5
aggravate(upset, bother, annoy, anger)
5
disenchant(adjective, turn, alienate, curdle)
5
exacerbate(upset, turn, poison, alienate)
5
go bad(expression, idiom, dull, turn)
5
irritate(upset, bother, annoy, pain)
5
provoke(work, bother, annoy, pain)
5
work(provoke, agitate, inflame, fester)
4
heighten
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APASmart Define. (2016). sour thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sour/thesaurus/synonyms
ChicagoSmart Define. 2016. "sour thesaurus" https://smartdefine.org/sour/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, sour thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sour/thesaurus/synonyms>.
MLASmart Define. "sour thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/sour/thesaurus/synonyms>