126 entries under sturdy topic. ×

5
unqualified(adjective, strong, complete, flat, firm)
5
unswerving(adjective, complete, firm, total, solid)
4
calm(adjective, quiet, smooth, firm, solid)
4
single-minded(adjective, tough, firm, solid, determined)
4
sound(adjective, clear, strong, hard, secure)
3
concrete(adjective, set, strong, hard, solid)
3
dependable(adjective, set, strong, tough, firm)
3
long-lasting(adjective, tough, stable, constant)
3
loyal(adjective, strong, firm, solid, true)
3
unquestioning(adjective, set, clear, firm, solid)
2
never-failing(adjective, set, clear, strong, flat)
2
reliable(adjective, clear, strong, sound, tough)
2
stabile(adjective, dull, firm, solid, still)
2
stark(adjective, strong, hard, sound, tough)
2
substantial(adjective, strong, hard, sound, tough)
2
unfluctuating(adjective, dull, strong, secure, firm)
2
unshaken(adjective, clear, strong, flat, firm)
1
able(adjective, set, strong, sound, tough)
1
able-bodied(adjective, strong, sound, tough, solid)
1
active(adjective, strong, sound, tough, solid)
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APASmart Define. (2016). fixed thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/fixed/thesaurus/synonyms
ChicagoSmart Define. 2016. "fixed thesaurus" https://smartdefine.org/fixed/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, fixed thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/fixed/thesaurus/synonyms>.
MLASmart Define. "fixed thesaurus" 16 March 2016. Web. 25 September 2026. <https://smartdefine.org/fixed/thesaurus/synonyms>