226 entries under solid topic. ×

10
unfaltering(adjective, firm, certain, determined)
9
dogged(adjective, mean, hard, tough, firm)
9
durable(adjective, strong, sound, secure, tough)
8
anchored(verb, adjective, strong, secure)
7
adjusted(verb, adjective, set, strong)
7
concentrated(verb, adjective, set, strong, hard)
7
strong(adjective, hard, sound, secure, tough)
6
bound(verb, adjective, set, strong, flat)
6
pat(adjective, firm, certain, determined)
6
staunch(adjective, strong, sound, tough, flat)
6
undeviating(adjective, strong, severe, flat, firm)
6
uniform(adjective, firm, ordinary, usual)
5
balanced(verb, adjective, firm, ordinary)
5
close(adjective, set, strong, hard, slight)
5
deep(adjective, activity, set, intense)
5
hard(adjective, adverb, mean, strong, rough)
5
located(verb, adjective, set, secure, firm)
5
riveted(verb, adjective, strong, secure)
5
unhesitating(adjective, complete, firm, certain)
5
unqualified(adjective, strong, complete, flat, firm)
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APASmart Define. (2016). fixed thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/fixed/thesaurus/synonyms
ChicagoSmart Define. 2016. "fixed thesaurus" https://smartdefine.org/fixed/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, fixed thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/fixed/thesaurus/synonyms>.
MLASmart Define. "fixed thesaurus" 16 March 2016. Web. 20 September 2026. <https://smartdefine.org/fixed/thesaurus/synonyms>