4
immediate(adjective, intimate, secret, private, penetrating)
4
in-depth(adjective, intimate, secret, private, penetrating)
4
inmost(adjective, essential, basic, intimate, fundamental)
4
innermost(adjective, intimate, secret, private, penetrating)
4
integral
4
interior(adjective, intimate, secret, private, penetrating)
4
privy(adjective, intimate, secret, private, penetrating)
4
profound(adjective, intimate, secret, private, penetrating)
4
secret(adjective, intimate, private, penetrating, personal)
4
special(adjective, individual, intimate, secret, private)
4
thorough(adjective, complete, utter, intimate, secret)
4
trusted(adjective, intimate, secret, private, penetrating)
4
uptight(adjective, intimate, secret, private, penetrating)
4
viscerous(adjective, intimate, secret, private, penetrating)
3
confidential(adjective, intimate, private, personal)
3
in the blood(expression, adjective, idiom)
3
ingenerate(adjective, reasonable, ordinary, natural, normal)
3
inwrought
3
physical(adjective, bodily, visceral)
2
aboriginal
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APASmart Define. (2015). inborn thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/inborn/thesaurus/synonyms
ChicagoSmart Define. 2015. "inborn thesaurus" https://smartdefine.org/inborn/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, inborn thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/inborn/thesaurus/synonyms>.
MLASmart Define. "inborn thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/inborn/thesaurus/synonyms>