Synonyms|389Antonyms|126|Broader|11Narrower|0Related|1.4k

56 entries under undisclosed topic. ×

13
underhand(adjective, honest, false, dishonest, cunning)
9
sneaky(adjective, honest, false, corrupt, dishonest)
8
furtive(adjective, dishonest, cunning, deceitful, unpredictable)
5
backstairs(clandestine, underground)
4
underground(secret, clandestine)
2
classified(clandestine, underground)
2
confidential(clandestine, underground)
2
private(secret, hidden, clandestine, underground)
2
sneak(clandestine, underground)
1
backdoor(clandestine, underground)
1
camouflaged(secret, hidden, clandestine, underground)
1
discreet(clandestine, underground)
1
dissembled(secret, hidden, clandestine, underground)
1
dissimulated(clandestine, underground)
1
hidden(secret, clandestine, underground, sneaky)
1
in ambush(expression, clandestine, underground)
1
incognito(secret, hidden, clandestine, underground)
1
mysterious(clandestine, underground)
1
top secret(expression, clandestine, underground)
1
unacknowledged(clandestine, underground)
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APASmart Define. (2016). underhanded thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/underhanded/thesaurus/synonyms
ChicagoSmart Define. 2016. "underhanded thesaurus" https://smartdefine.org/underhanded/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, underhanded thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/underhanded/thesaurus/synonyms>.
MLASmart Define. "underhanded thesaurus" 22 January 2016. Web. 26 September 2026. <https://smartdefine.org/underhanded/thesaurus/synonyms>