73 entries under solid topic. ×

32
unwavering(adjective, feature, state, characteristic, strong)
28
resolute(adjective, strong, firm, intense)
28
steadfast(adjective, complete, firm, total)
27
firm(noun, adjective, strong, complete, total)
25
steady(adjective, strong, complete, firm, total)
23
unflagging(adjective, strong, firm, energetic)
21
determined(adjective, strong, complete, warm, firm)
21
unswerving(adjective, strong, firm, total)
18
constant(adjective, strong, firm, certain)
15
staunch(adjective, strong, firm, intense)
13
dogged(adjective, strong, firm, energetic)
11
fixed(adjective, firm, certain, determined)
11
loyal(adjective, strong, firm, determined)
11
sure(adjective, complete, firm, total)
10
enduring(adjective, complete, firm, total)
10
unshakable(adjective, clear, firm, certain)
8
abiding(adjective, complete, firm, total)
8
undeviating(adjective, firm, intense, certain)
6
reliable(adjective, firm, stable, fixed)
6
set(verb, adjective, firm, certain)
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APASmart Define. (2015). unfaltering thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/unfaltering/thesaurus/synonyms
ChicagoSmart Define. 2015. "unfaltering thesaurus" https://smartdefine.org/unfaltering/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, unfaltering thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/unfaltering/thesaurus/synonyms>.
MLASmart Define. "unfaltering thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/unfaltering/thesaurus/synonyms>