184 entries under solid topic. ×

4
lasting(adjective, calm, strong, tough)
4
perfect(adjective, person, complete, healthy)
4
refractory(adjective, hard, tough, rigid)
4
tight(adjective, close, strong, hard, tough)
4
well-founded(adjective, calm, strong, sound, secure)
3
dense(adjective, person, close, set, body)
3
fresh(adjective, strong, moving, tough, fit)
3
hulking(adjective, strong, large, robust)
3
in fine fettle(expression, adjective, idiom, strong, tough)
3
material(adjective, strong, hard, big)
3
reliable(adjective, calm, strong, secure, tough)
3
stouthearted(adjective, durable)
3
sure(adjective, calm, strong, tough, continue)
2
active(adjective, person, strong, sound, tough)
2
close(adjective, set, strong, hard, tough)
2
compact(adjective, close, set, strong, hard)
2
cool(adjective, firm, stable, fixed)
2
flinty(adjective, strong, hard, tough)
2
hard as nails(expression, adjective, idiom, strong, hard)
2
heavy-duty(adjective, strong, sound, tough)
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APASmart Define. (2016). sturdy thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/sturdy/thesaurus/synonyms
ChicagoSmart Define. 2016. "sturdy thesaurus" https://smartdefine.org/sturdy/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, sturdy thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/sturdy/thesaurus/synonyms>.
MLASmart Define. "sturdy thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/sturdy/thesaurus/synonyms>