37 entries under regular topic. ×

71
persistent(adjective, strong, tough, continue, strain)
66
stable(adjective, strong, secure, tough, strain)
50
firm(adjective, calm, strong, secure, tough)
47
constant(adjective, calm, strong, secure, tough)
47
perpetual(adjective, strain, usual, steady, stable)
39
consistent(adjective, strain, usual, steady, stable)
38
unfluctuating(adjective, calm, strong, secure, strain)
37
fixed(verb, adjective, strong, secure, tough)
34
invariable(adjective, calm, strong, secure, strain)
34
steadfast(adjective, calm, strong, secure, strain)
33
unalterable(adjective, calm, strong, secure, strain)
28
steady(adjective, calm, strong, secure, strain)
22
immutable(adjective, calm, strong, secure, firm)
21
unchanging(adjective, firm, steady, stable)
20
stabile(adjective, calm, strong, secure, strain)
12
continual(adjective, usual, steady, stable)
10
chronic(adjective, usual, routine, normal)
8
unvarying(adjective, calm, strong, secure, firm)
6
uninterrupted(adjective, steady, stable, fixed)
3
equable(adjective, calm, strong, secure, firm)
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APASmart Define. (2016). permanent thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/permanent/thesaurus/synonyms
ChicagoSmart Define. 2016. "permanent thesaurus" https://smartdefine.org/permanent/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, permanent thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/permanent/thesaurus/synonyms>.
MLASmart Define. "permanent thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/permanent/thesaurus/synonyms>