138 entries under sturdy topic. ×

12
heavy(noun, adjective, good, person, dull)
12
husky(adjective, person, body, strong, fresh)
12
sinewy(adjective, strong, sound, fit, thin)
12
sound(adjective, calm, strong, fit, firm)
12
substantial(adjective, calm, strong, hard, solid)
12
well-built(adjective, calm, person, body, strong)
11
fixed(adjective, mean, strong, hard, sound)
11
relentless(adjective, mean, strong, hard, severe)
11
rigorous(adjective, strong, hard, severe, rough)
11
staunch(adjective, calm, clear, strong, sound)
10
unrelenting(adjective, mean, strong, hard, severe)
9
mighty(adjective, person, body, strong, great)
8
athletic(adjective, person, body, strong, sound)
8
austere(adjective, strong, hard, severe, sharp)
8
hard-line(adjective, characteristic, strong, hard, rough)
8
healthy(adjective, strong, fit, condition, intense)
8
persistent(adjective, firm, unreasonable, grim, resolute)
8
resistant(adjective, strong, hard, fit, firm)
8
stable(adjective, strong, sound, firm, heavy)
8
unsparing(adjective, strong, hard, severe, rough)
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APASmart Define. (2016). tough thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/tough/thesaurus/synonyms
ChicagoSmart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, tough thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>.
MLASmart Define. "tough thesaurus" 30 March 2016. Web. 29 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms>