Synonyms|48Antonyms|0|Broader|0Narrower|0Related|48
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firm
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frigid
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hard
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hardheaded
0
hards
0
harsh
0
heartless
0
inclement
0
inconvenient
0
indifferent
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inflexible
0
inhumane
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laborious
0
nippy
0
petulant
0
rigid
0
rough
0
severe
0
sinewy
0
snappy
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APASmart Define. (2013). hard as stone thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/hard_as_stone/thesaurus/synonyms
ChicagoSmart Define. 2013. "hard as stone thesaurus" https://smartdefine.org/hard_as_stone/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2013, hard as stone thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/hard_as_stone/thesaurus/synonyms>.
MLASmart Define. "hard as stone thesaurus" 19 May 2013. Web. 26 September 2026. <https://smartdefine.org/hard_as_stone/thesaurus/synonyms>