Synonyms|1kAntonyms|253|Broader|5Narrower|1Related|546

146 entries under strict topic. ×

2
poignant(adjective, severe, harsh, unpleasant, vicious)
2
steadfast(adjective, hard, resolute, rigid, inflexible)
2
unadaptable(adjective, hard, resolute, rigid, inflexible)
2
unfeeling(adjective, tough, severe, harsh, cruel)
1
bullheaded(adjective, strong, hard, tough, severe)
1
by the book(expression, adjective, idiom, strong, hard)
1
dead set(expression, adjective, tough, severe, firm)
1
dead set on(expression, adjective, idiom, severe, harsh)
1
distressing(adjective, tough, severe, rough, difficult)
1
dogged(adjective, set, harsh, cruel, determined)
1
dyed-in-the-wool(adjective, set, strong, hard, tough)
1
forbidding(adjective, strong, hard, tough, severe)
1
grievous(adjective, hard, tough, severe, harsh)
1
hard-line(adjective, strong, hard, tough, severe)
1
indomitable(adjective, set, strong, hard, tough)
1
iron-fisted(adjective, tough, severe, firm, harsh)
1
powerful(adjective, severe, harsh, rigid, tight)
1
serious(adjective, strong, hard, tough, severe)
1
set(adjective, hard, tough, severe, firm)
1
single-minded(adjective, harsh, cruel, determined, fierce)
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APASmart Define. (2016). rigorous thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/rigorous/thesaurus/synonyms
ChicagoSmart Define. 2016. "rigorous thesaurus" https://smartdefine.org/rigorous/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, rigorous thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/rigorous/thesaurus/synonyms>.
MLASmart Define. "rigorous thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/rigorous/thesaurus/synonyms>