18 entries under profound topic. ×

4
guarded(adjective, intimate, secret, private, penetrating)
4
in-depth(adjective, intimate, secret, private, penetrating)
4
inborn(adjective, intimate, secret, private, penetrating)
4
inbred(adjective, intimate, secret, private, penetrating)
4
indwelling(adjective, intimate, secret, private, penetrating)
4
ingrained(adjective, intimate, secret, private, penetrating)
4
inmost(adjective, intimate, secret, private, penetrating)
4
penetrating(adjective, intimate, secret, private, detailed)
4
privy(adjective, intimate, secret, private, penetrating)
4
special(adjective, intimate, secret, private, penetrating)
4
thorough(adjective, intimate, secret, private, penetrating)
4
trusted(adjective, intimate, secret, private, penetrating)
4
uptight(adjective, intimate, secret, private, penetrating)
4
viscerous(adjective, intimate, secret, private, penetrating)
3
deep(adjective, intimate, secret, private, penetrating)
3
detailed(adjective, intimate, secret, private, penetrating)
3
elemental(adjective, intimate, secret, private, penetrating)
3
exhaustive(adjective, intimate, secret, private, penetrating)
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APASmart Define. (2015). firsthand thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/firsthand/thesaurus/synonyms
ChicagoSmart Define. 2015. "firsthand thesaurus" https://smartdefine.org/firsthand/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, firsthand thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/firsthand/thesaurus/synonyms>.
MLASmart Define. "firsthand thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/firsthand/thesaurus/synonyms>