4
stringent(adjective, severe, harsh, cruel, brutal)
4
extravagant(adjective, severe, harsh, exceptional, unreasonable)
4
fierce(adjective, hard, severe, rough, harsh)
4
immoderate(adjective, severe, harsh, exceptional, unreasonable)
4
tough(adjective, hard, rough, harsh, rude)
4
vigorous(adjective, severe, violent, aggressive, compulsory)
3
draconian(adjective, harsh)
3
foolhardy
3
hard(adjective, tough, severe, rough, harsh)
3
potent(adjective, severe, violent, aggressive, compulsory)
3
rough(adjective, hard, severe, harsh, rude)
3
strict(adjective, hard, severe, rough, harsh)
2
bold
2
furious
2
keen
2
outrageous
2
puissant
2
swingeing
2
thorough
2
unconscionable(adjective, severe, stringent)
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APASmart Define. (2015). drastic thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/drastic/thesaurus/synonyms
ChicagoSmart Define. 2015. "drastic thesaurus" https://smartdefine.org/drastic/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, drastic thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/drastic/thesaurus/synonyms>.
MLASmart Define. "drastic thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/drastic/thesaurus/synonyms>