2
endless(adjective, permanent, long-term, lifelong)
2
etched
2
eternal(adjective, permanent, long-term, lifelong)
2
everlasting(adjective, permanent, long-term, lifelong)
2
fundamental
2
hard-core
2
hard-shell(adjective, continue, confirmed)
2
hereditary
2
indissoluble(adjective, permanent, long-term, lifelong)
2
inherited
2
inmost
2
instilled
2
instinctual(noun, adjective, feeling, emotions, at heart)
2
irradicable(adjective, continue, confirmed)
2
lasting(adjective, calm, strong, solid, steady)
2
long-lived(adjective, persistent, continuous, hardened, lasting)
2
long-term(adjective, permanent, lifelong)
2
native
2
natural
2
permanent(adjective, calm, strong, solid, steady)
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APASmart Define. (2016). deep-rooted thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/deep-rooted/thesaurus/synonyms
ChicagoSmart Define. 2016. "deep-rooted thesaurus" https://smartdefine.org/deep-rooted/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, deep-rooted thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/deep-rooted/thesaurus/synonyms>.
MLASmart Define. "deep-rooted thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/deep-rooted/thesaurus/synonyms>