3
determined(adjective, usual, regular, persistent, planned)
3
dyed-in-the-wool(adjective, established)
3
habituated(adjective, continue, established)
3
hard-core(adjective, established)
3
hard-shell(adjective, continue, persistent, obstinate, insistent)
3
immemorial
3
indurated(adjective, established)
3
inherent(adjective, affections)
3
long-term
3
narrow-minded(adjective, persistent, obstinate, insistent, dogged)
3
native(adjective, innate, inherent)
3
persisting(adjective, persistent, established, hardened, lasting)
3
resolved(adjective, certain, determined, usual, regular)
3
rigid(adjective, determined, usual, regular, persistent)
3
sworn(adjective, established)
3
traditional(adjective, familiar, usual, regular, routine)
3
unflinching(adjective, certain, limited, definite, inflexible)
2
admitted
2
aged
2
ceaseless(adjective, fixed, persistent, continuous, lasting)
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APASmart Define. (2016). inveterate thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/inveterate/thesaurus/synonyms
ChicagoSmart Define. 2016. "inveterate thesaurus" https://smartdefine.org/inveterate/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, inveterate thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/inveterate/thesaurus/synonyms>.
MLASmart Define. "inveterate thesaurus" 26 February 2016. Web. 28 September 2026. <https://smartdefine.org/inveterate/thesaurus/synonyms>