110 entries under harsh topic. ×

2
puritanical(adjective, tough, severe, firm)
2
set(adjective, tough, severe, firm)
2
unbending(adjective, severe, cruel, determined)
2
unforgiving(adjective, cruel, determined, fierce)
2
unrelenting(adjective, tough, severe, solid)
2
weighty(adjective, good, strong, hard, sound)
1
adamant(adjective, cruel, determined, fierce)
1
antagonistic(adjective, tough, severe, cruel)
1
bound(adjective, cruel, determined, fierce)
1
bound and determined(expression, adjective, idiom, cruel)
1
cold(adjective, tough, severe, cruel)
1
dead set(expression, adjective, tough, severe, firm)
1
dead set on(expression, adjective, idiom, severe)
1
determined(adjective, severe, solid, cruel)
1
disagreeable(adjective, tough, severe, cruel)
1
disciplinary(adjective, tough, severe, firm)
1
distressing(adjective, tough, severe, cruel)
1
dogged(adjective, cruel, determined, fierce)
1
ferocious(adjective, cruel, determined, fierce)
1
fixed(adjective, set, severe, solid)
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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>