Synonyms|166Antonyms|1|Broader|1Narrower|0Related|34
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drastic
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exact
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exacting
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fastidious
0
fiendish
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fine-grained
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finicky
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fussy
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gelatinous
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gloppy
0
gluey
0
grim
0
gummous
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gunky
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hardened inflexible(expression, adjective, firm, solid, stiff)
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hardheaded(adjective, inflexible, unbending)
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harsh
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hidebound(adjective, firm, solid, stiff, inflexible)
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immalleable
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immovable
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APASmart Define. (2015). hard and fast thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/hard_and_fast/thesaurus/synonyms
ChicagoSmart Define. 2015. "hard and fast thesaurus" https://smartdefine.org/hard_and_fast/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, hard and fast thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/hard_and_fast/thesaurus/synonyms>.
MLASmart Define. "hard and fast thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/hard_and_fast/thesaurus/synonyms>