19 entries under underhanded topic. ×

13
covert(adjective, show, secret, hidden, clandestine)
8
obscured(adjective, show, secret, hidden, imperceptible)
7
shrouded(adjective, cover, obscure, secret, hidden)
6
buried(adjective, cover, show, obscure, secret)
6
privy(adjective, cover, obscure, secret, hidden)
6
secret(adjective, separate, unknown, hidden, concealed)
4
under cover(expression, adjective, idiom, cover, show)
2
hush-hush(separate, secret, hidden, underground)
1
QT(secret, unknown, hidden, concealed)
1
camouflaged(secret, hidden, underground, covered)
1
cloaked(secret, unknown, hidden, concealed)
1
disguised(secret, unknown, hidden, imperceptible)
1
incog(secret, hidden, underground, covered)
1
masked(secret, hidden, imperceptible, covered)
1
veiled(secret, hidden, imperceptible, covered)
0
dissembled(secret, hidden, clandestine, underground)
0
sub rosa(expression, secret, clandestine, underground)
0
under-the-table(secret, hidden, clandestine, underground)
0
unsuspected(secret, hidden, clandestine, underground)
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APASmart Define. (2015). ulterior thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/ulterior/thesaurus/synonyms
ChicagoSmart Define. 2015. "ulterior thesaurus" https://smartdefine.org/ulterior/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, ulterior thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/ulterior/thesaurus/synonyms>.
MLASmart Define. "ulterior thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/ulterior/thesaurus/synonyms>