363 entries under adjective topic. ×

1
excessive(severe, drastic)
1
exorbitant(severe, drastic)
1
ferocious(harsh, cruel, determined, fierce)
1
finicky
1
fixed(set, severe, harsh, solid)
1
forbidding(tough, severe, firm, harsh)
1
frosty
1
fundamental
1
go for broke(expression, idiom, harsh, cruel)
1
grievous(hard, tough, severe, difficult)
1
gutsy(strong, energetic, violent, powerful)
1
hang-tough(harsh, cruel, determined, fierce)
1
hang in(expression, harsh, cruel, determined)
1
hard-and-fast(set, hard, stiff, rigid)
1
hard-boiled(hard, tough, severe, sharp)
1
hard-shell(severe, bleak, severity, stark)
1
hostile(tough, severe, harsh, cruel)
1
icy
1
immovable(hard, rigid, inflexible, strict)
1
immutable(set, hard, stiff, rigid)
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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>