100 entries under sour topic. ×

34
dull(adjective, calm, hard, simple, tough)
17
stale(verb, adjective, state, take, dull)
14
parched(adjective, state, hard, keen, thin)
13
flat(adjective, calm, dull, hard, simple)
13
dead(adjective, dull, hard, simple, flat)
11
insipid(adjective, dull, hard, flat, ordinary)
11
commonplace(adjective, dull, hard, simple, flat)
9
keen(adjective, severe, sharp, unpleasant, anxious)
8
biting(adjective, sharp, unpleasant, bitter, critical)
8
sharp(adjective, hard, severe, flat, rough)
8
tart(adjective, severe, taste, sharp, unpleasant)
7
acerbic(adjective, severe, taste, unpleasant, bitter)
7
acid(adjective, taste, sharp, unpleasant, behavior)
7
acidulous(adjective, taste, bitter)
7
caustic(adjective, severe, sharp, unpleasant, bitter)
7
cutting(adjective, severe, sharp, unpleasant, bitter)
7
dusty(adjective, dull, hard, boring, bare)
6
drab(adjective, dull, hard, simple, flat)
5
acerb(adjective, taste, sharp, unpleasant, bitter)
5
banal(adjective, dull, hard, simple, flat)
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APASmart Define. (2016). dry thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/dry/thesaurus/synonyms
ChicagoSmart Define. 2016. "dry thesaurus" https://smartdefine.org/dry/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, dry thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/dry/thesaurus/synonyms>.
MLASmart Define. "dry thesaurus" 30 March 2016. Web. 25 September 2026. <https://smartdefine.org/dry/thesaurus/synonyms>