8
internal(adjective, inside, central, interior, inner)
7
inland(adjective, remote, inside, central, interior)
7
inner(adjective, inside, central, interior, internal)
6
inward(adjective, inside, central, interior, inner)
6
autogenous(adjective, individual, remote, inside, central)
6
domestic(adjective, inside, central, interior, inner)
6
endogenic
6
gut(adjective, inside, central, interior, inner)
6
home(adjective, inside, central, interior, inner)
6
in-house(adjective, remote, inside, central, interior)
6
innermost(adjective, remote, inside, central, interior)
6
intimate(adjective, inside, central, interior, inner)
6
private(adjective, inside, central, interior, inner)
6
remote(adjective, inside, central, interior, inner)
6
secret(adjective, inside, central, interior, inner)
6
viscerous(adjective, inside, central, interior, inner)
4
interior(adjective, inside, central, inner, internal)
3
visceral(adjective, inside, central, interior, inner)
2
endogen
2
inside(adjective, inner, internal, inlying)
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APASmart Define. (2013). Endogenous thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/endogenous/thesaurus/synonyms
ChicagoSmart Define. 2013. "Endogenous thesaurus" https://smartdefine.org/endogenous/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2013, Endogenous thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/endogenous/thesaurus/synonyms>.
MLASmart Define. "Endogenous thesaurus" 28 June 2013. Web. 21 September 2026. <https://smartdefine.org/endogenous/thesaurus/synonyms>