Synonyms|404Antonyms|106|Broader|1Narrower|0Related|115

68 entries under solid topic. ×

3
hale(adjective, strong, sound, tough)
3
hard(adjective, set, strong, tough, continue)
3
hardy(adjective, set, strong, hard, sound)
3
stalwart(adjective, strong, hard, sound, tough)
2
dense(adjective, set, strong, hard, tough)
2
flinty(adjective, strong, hard, firm)
2
forceful(adjective, strong, sound, tough)
2
forcible(adjective, strong, sound, tough)
2
hard-bitten(adjective, strong, hard, continue)
2
hearty(adjective, strong, sound, tough)
2
lusty(adjective, strong, hard, stiff)
2
mighty(adjective, strong, hard, sound, tough)
2
powerful(adjective, strong, sound, tough)
2
resistant(adjective, strong, hard, stiff)
2
robust(adjective, strong, hard, sound, tough)
2
stout(adjective, strong, hard, sound, tough)
2
strapping(adjective, strong, hard, sound, tough)
2
sturdy(adjective, strong, hard, sound, tough)
2
vigorous(adjective, strong, hard, sound, tough)
1
able(adjective, strong, sound, tough)
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APASmart Define. (2015). hard as nails thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/hard_as_nails/thesaurus/synonyms
ChicagoSmart Define. 2015. "hard as nails thesaurus" https://smartdefine.org/hard_as_nails/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, hard as nails thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/hard_as_nails/thesaurus/synonyms>.
MLASmart Define. "hard as nails thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/hard_as_nails/thesaurus/synonyms>