126 entries under sturdy topic. ×

16
persistent(adjective, strong, tough, flat, firm)
15
secure(adjective, strong, hard, sound, tough)
14
lasting(adjective, strong, tough, firm, stable)
14
unvarying(adjective, dull, clear, firm, solid)
13
regular(adjective, firm, solid, exact, proper)
13
solid(adjective, set, strong, hard, sound)
12
sure(adjective, clear, strong, flat, firm)
11
set in stone(expression, adjective, idiom, mean, hard)
11
tenacious(adjective, strong, sound, secure, tough)
10
abiding(adjective, strong, tough, flat, firm)
10
unfaltering(adjective, firm, solid, certain, determined)
9
durable(adjective, strong, sound, secure, tough)
9
indestructible(adjective, tough, stable, constant)
9
tough(adjective, mean, strong, hard, sound)
7
strong(adjective, hard, sound, secure, tough)
6
staunch(adjective, strong, sound, tough, flat)
6
uniform(adjective, firm, solid, ordinary, usual)
5
balanced(verb, adjective, firm, solid, ordinary)
5
hard(adjective, adverb, mean, strong, rough)
5
resistant(adjective, strong, tough, firm, determined)
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APASmart Define. (2016). fixed thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/fixed/thesaurus/synonyms
ChicagoSmart Define. 2016. "fixed thesaurus" https://smartdefine.org/fixed/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, fixed thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/fixed/thesaurus/synonyms>.
MLASmart Define. "fixed thesaurus" 16 March 2016. Web. 23 September 2026. <https://smartdefine.org/fixed/thesaurus/synonyms>