112 entries under substantial topic. ×

2
bodily
2
hard as nails(expression, adjective, idiom, strong, hard)
2
heavy-duty(adjective, strong, sound, tough, solid)
2
immovable(adjective, strong, hard, tough, firm)
2
permanent(adjective, calm, strong, tough, steady)
2
real
2
reinforced(adjective, strong, sound, tough, solid)
2
set(adjective, calm, strong, hard, tough)
2
solid as a rock(expression, adjective, idiom, calm, strong)
2
tangible
2
unchangeable(adjective, calm, strong, secure, firm)
1
abiding(adjective, calm, strong, secure, tough)
1
able(adjective, strong, sound, tough, fit)
1
anchored(calm, strong, solid, steady)
1
balanced(adjective, calm, strong, secure, firm)
1
brick-wall(adjective, calm, strong, secure, firm)
1
calm(adjective, strong, secure, firm, solid)
1
capable(adjective, strong, sound, tough, fit)
1
constant(adjective, calm, strong, secure, tough)
1
deep-rooted(adjective, calm, strong, solid, steady)
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APASmart Define. (2016). sturdy thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sturdy/thesaurus/synonyms
ChicagoSmart Define. 2016. "sturdy thesaurus" https://smartdefine.org/sturdy/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, sturdy thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sturdy/thesaurus/synonyms>.
MLASmart Define. "sturdy thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/sturdy/thesaurus/synonyms>