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

29 entries under adjective topic. ×

5
secret(sensitive, intimate, private, hidden)
3
stealthy(clandestine, underground, undisclosed)
2
arcane(obscure, deep, intimate, secret)
2
backstairs(close, sensitive, secret, restricted)
2
clandestine(underground, undisclosed)
2
confidential(intimate, secret, private, clandestine)
2
covert(clandestine, underground, undisclosed)
2
cryptic(close, obscure, unknown, inside)
2
furtive(close, obscure, unknown, clandestine)
2
surreptitious(clandestine, underground, undisclosed)
2
undercover(clandestine, underground, undisclosed)
2
underground(obscure, unknown, clandestine, undisclosed)
2
underhanded(clandestine, underground, undisclosed)
1
esoteric(obscure, unknown, clandestine, underground)
1
mysterious(obscure, unknown, clandestine, underground)
1
obscure(unknown, clandestine, underground, undisclosed)
1
off the record(expression, idiom, intimate, secret)
1
private(obscure, intimate, secret, unknown)
1
recondite(obscure, unknown, clandestine, underground)
1
sneaky(clandestine, underground, undisclosed)
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APASmart Define. (2013). backdoor thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/backdoor/thesaurus/synonyms
ChicagoSmart Define. 2013. "backdoor thesaurus" https://smartdefine.org/backdoor/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2013, backdoor thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/backdoor/thesaurus/synonyms>.
MLASmart Define. "backdoor thesaurus" 19 May 2013. Web. 23 September 2026. <https://smartdefine.org/backdoor/thesaurus/synonyms>