91 entries under established topic. ×

6
inbred(adjective, complete, natural, fixed)
6
incurable(adjective, fixed, persistent, hardened)
6
ineradicable(adjective, set, continue, fixed)
6
innate
6
long-lived(adjective, familiar, persistent, hardened)
6
obstinate(adjective, firm, determined, usual, regular)
5
customary(adjective, firm, determined, usual, regular)
5
abiding(adjective, certain, limited, definite, persistent)
5
lifelong(adjective, familiar, fixed, persistent)
5
perpetual(adjective, familiar, usual, hardened)
5
usual(adjective, determined, regular, routine, normal)
4
accustomed
4
addicted
4
constant(familiar, usual, fixed, persistent)
4
firm(adjective, certain, familiar, usual, limited)
4
long-lasting(adjective, familiar, hardened, confirmed)
4
steadfast(adjective, certain, determined, usual, regular)
4
steady(adjective, certain, familiar, usual, regular)
3
determined(adjective, usual, regular, persistent, planned)
3
dyed-in-the-wool
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APASmart Define. (2016). inveterate thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/inveterate/thesaurus/synonyms
ChicagoSmart Define. 2016. "inveterate thesaurus" https://smartdefine.org/inveterate/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, inveterate thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/inveterate/thesaurus/synonyms>.
MLASmart Define. "inveterate thesaurus" 26 February 2016. Web. 29 September 2026. <https://smartdefine.org/inveterate/thesaurus/synonyms>