39 entries under confirmed topic. ×

1
inbred(fixed, persistent, continuous, hardened, lasting)
1
lifelong(fixed, persistent, continuous, hardened, lasting)
1
long-lived(persistent, continuous, hardened, lasting, continuing)
1
long-standing(persistent, continuous, hardened, lasting, continuing)
1
obstinate(persistent, continuous, hardened, stability, lasting)
1
perennial(adjective, persistent, continuous, hardened, lasting)
1
persistent(continuous, hardened, lasting, continuing)
1
persisting(persistent, continuous, hardened, lasting, continuing)
1
proved
1
seasoned
1
staid
1
usual(persistent, continuous, hardened, lasting, continuing)
1
valid
1
worn
0
dyed-in-the-wool
0
habituated
0
hardened
0
inured
0
long-established
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APASmart Define. (2015). ineradicable thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/ineradicable/thesaurus/synonyms
ChicagoSmart Define. 2015. "ineradicable thesaurus" https://smartdefine.org/ineradicable/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, ineradicable thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/ineradicable/thesaurus/synonyms>.
MLASmart Define. "ineradicable thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/ineradicable/thesaurus/synonyms>