| stringent(adjective, severe, harsh, cruel, brutal) | |
| extravagant(adjective, severe, harsh, exceptional, unreasonable) | |
| fierce(adjective, hard, severe, rough, harsh) | |
| immoderate(adjective, severe, harsh, exceptional, unreasonable) | |
| tough(adjective, hard, rough, harsh, rude) | |
| vigorous(adjective, severe, violent, aggressive, compulsory) | |
| draconian(adjective, harsh) | |
| foolhardy | |
| hard(adjective, tough, severe, rough, harsh) | |
| potent(adjective, severe, violent, aggressive, compulsory) | |
| rough(adjective, hard, severe, harsh, rude) | |
| strict(adjective, hard, severe, rough, harsh) | |
| bold | |
| furious | |
| keen | |
| outrageous | |
| puissant | |
| swingeing | |
| thorough | |
| unconscionable(adjective, severe, stringent) |
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| APA | Smart Define. (2015). drastic thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/drastic/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "drastic thesaurus" https://smartdefine.org/drastic/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, drastic thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/drastic/thesaurus/synonyms>. |
| MLA | Smart Define. "drastic thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/drastic/thesaurus/synonyms> |