Synonyms|17Antonyms|0|Broader|0Narrower|0Related|4
1
bony
1
cement
1
concrete
1
corneous
1
dense
1
flinty
1
hard
1
marble
1
marblelike
1
obdurate
1
resistant
1
rocky
1
solid
1
steely
1
stony
1
tough
0
durance
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APASmart Define. (2015). dure thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/dure/thesaurus/synonyms
ChicagoSmart Define. 2015. "dure thesaurus" https://smartdefine.org/dure/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, dure thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/dure/thesaurus/synonyms>.
MLASmart Define. "dure thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/dure/thesaurus/synonyms>