48 entries under caustic topic. ×

5
astringent(adjective, severe, sharp, harsh, unpleasant)
5
severe(adjective, severe, sharp, cutting)
5
stinging(adjective, strong, hard, sharp, unpleasant)
4
piercing(feeling, strong, sharp, powerful, funny)
3
acidic(adjective, sharp, unpleasant, bitter, sour)
3
dry(adjective, severe, sharp, unpleasant, bitter)
3
pointed(adjective, strong, sharp, vigor, powerful)
2
unripe(adjective, sharp, unpleasant, bitter, sour)
1
acerb(adjective, sharp, unpleasant, bitter, critical)
1
acetic(adjective, sharp, unpleasant, bitter, sour)
1
acetose(adjective, sharp, unpleasant, bitter, critical)
1
acetous(adjective, sharp, unpleasant, bitter, sour)
1
acidulated(adjective, sharp, unpleasant, bitter, sour)
1
bad(adjective, sharp, unpleasant, bitter, sour)
1
briny(adjective, sharp, unpleasant, bitter, sour)
1
curdled(adjective, sharp, unpleasant, bitter, sour)
1
fermented(adjective, sharp, unpleasant, bitter, sour)
1
green(adjective, sharp, unpleasant, bitter, sour)
1
musty(adjective, sharp, unpleasant, bitter, sour)
1
rancid(adjective, hard, sharp, unpleasant, high)
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APASmart Define. (2015). piquant thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/piquant/thesaurus/synonyms
ChicagoSmart Define. 2015. "piquant thesaurus" https://smartdefine.org/piquant/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, piquant thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/piquant/thesaurus/synonyms>.
MLASmart Define. "piquant thesaurus" 17 July 2015. Web. 29 September 2026. <https://smartdefine.org/piquant/thesaurus/synonyms>