107 entries under severe topic. ×
| frosty | |
| icy | |
| inflexible | |
| intolerant | |
| morose(adjective, nasty, hostile, resentful) | |
| oppressive | |
| rigid | |
| smarting(adjective, hard, sharp, tender) | |
| strict | |
| strong(adjective, feeling, sharp, intense) | |
| unbending | |
| uncompromising | |
| acetic(adjective, sharp, harsh, unpleasant) | |
| authoritarian | |
| basic | |
| chilly | |
| correct | |
| disciplined | |
| draconian | |
| earnest(adjective, close, strong, hard) |
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| APA | Smart Define. (2015). caustic thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/caustic/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "caustic thesaurus" https://smartdefine.org/caustic/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, caustic thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/caustic/thesaurus/synonyms>. |
| MLA | Smart Define. "caustic thesaurus" 21 July 2015. Web. 25 September 2026. <https://smartdefine.org/caustic/thesaurus/synonyms> |