2
swingeing
2
trenchant
2
tyrannical(adjective, severity)
2
unbending(adjective, severe, harsh, cruel, determined)
2
unforgiving(adjective, harsh, cruel, determined, fierce)
2
unrelenting(adjective, tough, severe, harsh, solid)
2
vehement(adjective, strong, energetic, violent, powerful)
2
virulent
2
weighty(adjective, good, strong, hard, sound)
1
absolute
1
abusive(adjective, hard, severe, sharp, nasty)
1
acerbic(adjective, severe)
1
acidulous
1
adamant(adjective, harsh, cruel, determined, fierce)
1
adamantine(adjective, hard, severe, stiff, resolute)
1
antagonistic(adjective, tough, severe, harsh, cruel)
1
arrogant
1
austerity
1
ball of fire(expression, adjective, idiom, strong, energetic)
1
basic(adjective, severe)
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APASmart Define. (2015). stringent thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/stringent/thesaurus/synonyms
ChicagoSmart Define. 2015. "stringent thesaurus" https://smartdefine.org/stringent/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, stringent thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/stringent/thesaurus/synonyms>.
MLASmart Define. "stringent thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/stringent/thesaurus/synonyms>