Synonyms|316Antonyms|26|Broader|0Narrower|0Related|141

1 entry under firmness topic. ×

3
adamant(adjective, hardness, solidity, sturdiness)
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APASmart Define. (2016). hard-core thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/hard-core/thesaurus/related
ChicagoSmart Define. 2016. "hard-core thesaurus" https://smartdefine.org/hard-core/thesaurus/related (accessed September 28, 2026).
HarvardSmart Define 2016, hard-core thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/hard-core/thesaurus/related>.
MLASmart Define. "hard-core thesaurus" 28 March 2016. Web. 28 September 2026. <https://smartdefine.org/hard-core/thesaurus/related>