51 entries under caustic topic. ×

4
tangy(adjective, strong, sharp, harsh, powerful)
3
acetous(adjective, sharp, harsh, unpleasant, bitter)
3
penetrating(adjective, strong, sharp, harsh, powerful)
3
peppery(adjective, strong, sharp, unpleasant, powerful)
3
unsavory(adjective, sharp, unpleasant, bitter, sour)
3
vinegary(adjective, sharp, harsh, unpleasant, bitter)
2
corroding(adjective, harsh, acid, biting)
2
cynical(adjective, tough, keen, sharp, harsh)
2
erosive(adjective, harsh, acid, biting)
2
pointed(adjective, strong, sharp, harsh, powerful)
2
racy(strong, sharp, powerful, bitter)
2
unpleasant(adjective, severe, sharp, harsh, bitter)
1
acetic(adjective, severe, sharp, harsh, unpleasant)
1
acetose(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
dry(adjective, hard, sharp, flat, rough)
1
fermented(adjective, sharp, unpleasant, bitter, sour)
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APASmart Define. (2015). acrid thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/acrid/thesaurus/synonyms
ChicagoSmart Define. 2015. "acrid thesaurus" https://smartdefine.org/acrid/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, acrid thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/acrid/thesaurus/synonyms>.
MLASmart Define. "acrid thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/acrid/thesaurus/synonyms>