21 entries under obscure topic. ×

12
concealed(adjective, show, secret, hidden)
11
remote(adjective, cover, distant, secret)
10
hidden(verb, adjective, cover, show, separate)
9
guarded(adjective, cover, secret, hidden)
7
shrouded(adjective, cover, secret, hidden)
6
buried(adjective, cover, show, secret)
6
cryptic(adjective, cover, secret, unknown)
6
privy(adjective, cover, secret, hidden)
5
personal(adjective, cover, separate, secret)
5
undisclosed(adjective, cover, secret, imperceptible)
4
ambiguous(adjective, cover, secret, pertaining)
4
enigmatic(adjective, cover, secret, pertaining)
4
equivocal(adjective, cover, secret, pertaining)
4
under cover(expression, adjective, idiom, cover, show)
4
under wraps(expression, adjective, secret, hidden)
4
unexpressed(adjective, cover, secret, pertaining)
3
secondary(adjective, cover, last, secret)
3
undivulged(adjective, cover, secret, pertaining)
3
unsaid(adjective, cover, secret, pertaining)
2
implied(adjective, cover, secret, pertaining)
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APASmart Define. (2015). ulterior thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/ulterior/thesaurus/synonyms
ChicagoSmart Define. 2015. "ulterior thesaurus" https://smartdefine.org/ulterior/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, ulterior thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/ulterior/thesaurus/synonyms>.
MLASmart Define. "ulterior thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/ulterior/thesaurus/synonyms>