52 entries under definite topic. ×

59
persistent(adjective, strong, strain, flat, certain)
49
firm(adjective, calm, strong, hard, secure)
46
stable(adjective, strong, secure, strain, flat)
39
consistent(adjective, strong, strain, flat, certain)
31
constant(adjective, calm, strong, secure, strain)
26
steadfast(adjective, calm, strong, secure, strain)
25
unchangeable(adjective, calm, strong, fixed)
23
fixed(adjective, strong, hard, secure, severe)
22
enduring(adjective, calm, strong, secure, strain)
22
steady(adjective, calm, strong, secure, strain)
13
inflexible(adjective, set, strong, hard, secure)
9
certain(adjective, fixed, distinct, rigid)
8
stubborn(adjective, determined, steady, fixed)
6
resolute(adjective, calm, strong, hard)
6
undeviating(adjective, strong, severe, flat, harsh)
5
determined(adjective, severe, stiff, necessary)
5
unwavering(adjective, calm, strong, fixed)
4
adamant(adjective, strong, hard, fixed)
4
stated(strong, certain, fixed, rigid)
4
unbending(set, strong, hard, severe)
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APASmart Define. (2015). unalterable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unalterable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unalterable thesaurus" https://smartdefine.org/unalterable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, unalterable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unalterable/thesaurus/synonyms>.
MLASmart Define. "unalterable thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/unalterable/thesaurus/synonyms>