190 entries under fixed topic. ×

28
sturdy(adjective, calm, strong, hard, sound)
26
unfaltering(adjective, strong, complete, total, solid)
24
secure(verb, adjective, calm, fix, strong)
24
unflinching(adjective, strong, certain, determined, steady)
23
unswerving(adjective, close, strong, tough, correct)
22
sure(adjective, calm, good, close, clear)
21
decided(adjective, set, clear, intense, certain)
21
dogged(adjective, mean, strong, hard, tough)
19
reliable(adjective, calm, close, clear, strong)
18
certain(adjective, characteristic, good, change, clear)
15
unchanging(adjective, close, correct, moderate, severe)
14
intent(adjective, set, intense, certain, deliberate)
14
unchangeable(adjective, calm, strong, secure, moderate)
13
rooted(adjective, strong, hard, secure, property)
12
dependable(adjective, good, close, strong, tough)
12
hard-nosed(adjective, mean, clear, strong, hard)
11
abiding(adjective, calm, strong, complete, secure)
11
decisive(adjective, good, set, clear, strong)
10
changeless(adjective, solid, certain, stable, limited)
10
immobile(adjective, calm, quiet, strong, secure)
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APASmart Define. (2016). firm thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/firm/thesaurus/synonyms
ChicagoSmart Define. 2016. "firm thesaurus" https://smartdefine.org/firm/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, firm thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/firm/thesaurus/synonyms>.
MLASmart Define. "firm thesaurus" 31 March 2016. Web. 23 September 2026. <https://smartdefine.org/firm/thesaurus/synonyms>