1
immortal
1
impregnable
1
inborn(fixed, persistent, continuous, lasting, continuing)
1
inbred(fixed, persistent, continuous, hardened, lasting)
1
incorruptible
1
indefinite
1
indicative
1
inexpugnable
1
inexpungeable
1
inexpungible
1
inexterminable
1
inextinguishable
1
invariable(adjective, intrinsicality)
1
invincible
1
invulnerable
1
lifelong(fixed, persistent, continuous, hardened, lasting)
1
lingering(fixed, persistent, lasting, remaining, chronic)
1
long-lived(persistent, continuous, hardened, lasting, continuing)
1
long-standing(persistent, continuous, hardened, lasting, continuing)
1
nonperishable
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APASmart Define. (2015). ineradicable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/ineradicable/thesaurus/synonyms
ChicagoSmart Define. 2015. "ineradicable thesaurus" https://smartdefine.org/ineradicable/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, ineradicable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/ineradicable/thesaurus/synonyms>.
MLASmart Define. "ineradicable thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/ineradicable/thesaurus/synonyms>