Synonyms|840Antonyms|203|Broader|15Narrower|36Related|522
3
perseverance
2
immovability
2
phrenology
1
assurance
1
bravery
1
coherence
1
confidence
1
fortitude
1
immovableness
1
state
1
stiffness
1
strength
1
tenacity
1
trait
0
hardness
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APASmart Define. (2015). firmness thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/firmness/thesaurus/broader
ChicagoSmart Define. 2015. "firmness thesaurus" https://smartdefine.org/firmness/thesaurus/broader (accessed September 21, 2026).
HarvardSmart Define 2015, firmness thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/firmness/thesaurus/broader>.
MLASmart Define. "firmness thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/firmness/thesaurus/broader>