Synonyms|128Antonyms|3|Broader|4Narrower|0Related|53

16 entries under close topic. ×

2
backstairs(adjective, sensitive, secret, restricted)
2
cryptic(adjective, obscure, unknown, inside)
2
furtive(adjective, obscure, unknown, clandestine)
1
camouflaged(obscure, unknown, clandestine, underground)
1
discreet(inside, clandestine, underground, undisclosed)
1
dissembled(clandestine, underground, undisclosed, furtive)
1
dissimulated(inside, clandestine, underground, undisclosed)
1
in ambush(expression, sensitive, inside, clandestine)
1
incognito(clandestine, underground, undisclosed, furtive)
1
inside(intimate, secret, private, clandestine)
1
sneak(inside, clandestine, underground, undisclosed)
1
sub-rosa(sensitive, clandestine, underground, undisclosed)
1
top secret(expression, sensitive, inside, clandestine)
1
unacknowledged(sensitive, inside, clandestine, underground)
1
under false pretense(expression, idiom, sensitive, clandestine)
0
under the table(expression, idiom, sensitive, inside)
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APASmart Define. (2013). backdoor thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/backdoor/thesaurus/synonyms
ChicagoSmart Define. 2013. "backdoor thesaurus" https://smartdefine.org/backdoor/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2013, backdoor thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/backdoor/thesaurus/synonyms>.
MLASmart Define. "backdoor thesaurus" 19 May 2013. Web. 21 September 2026. <https://smartdefine.org/backdoor/thesaurus/synonyms>