Synonyms|585Antonyms|171|Broader|15Narrower|9Related|487
5
stay strong
4
gritty resilience
3
adamant(rigidity, solidity, inflexibility)
3
horny
1
dullness
1
incompressibility
1
more difficult
1
unsuspected difficulty
0
firmness
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APASmart Define. (2015). hardness thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/hardness/thesaurus/narrower
ChicagoSmart Define. 2015. "hardness thesaurus" https://smartdefine.org/hardness/thesaurus/narrower (accessed September 21, 2026).
HarvardSmart Define 2015, hardness thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/hardness/thesaurus/narrower>.
MLASmart Define. "hardness thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/hardness/thesaurus/narrower>