375 entries under adjective topic. ×

5
malevolent
5
nasty(severe, sharp, harsh, rude)
5
penetrating(strong, hard, severe, sharp)
5
pithy
5
rough
5
short(severe, discourtesy)
5
snappish(keen, sharp, unpleasant, lively)
5
sulfurous
5
sulphurous
5
tedious(tender, raw, painful, sickness)
5
testy(keen, sharp, unpleasant, lively)
5
troublesome(sickness, ache, anguishes)
5
vicious(hard, negative, critical, spiteful)
4
abrupt
4
antagonistic(mean, severe, sharp, nasty)
4
barbed(strong, sharp, nasty, unpleasant)
4
bearish
4
choleric(keen, sharp, lively)
4
corroding(pain, burning, corrosive)
4
cranky(keen, sharp, lively, unfriendly)
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APASmart Define. (2015). caustic thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/caustic/thesaurus/synonyms
ChicagoSmart Define. 2015. "caustic thesaurus" https://smartdefine.org/caustic/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, caustic thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/caustic/thesaurus/synonyms>.
MLASmart Define. "caustic thesaurus" 21 July 2015. Web. 25 September 2026. <https://smartdefine.org/caustic/thesaurus/synonyms>