Synonyms|888Antonyms|139|Broader|6Narrower|5Related|1k

43 entries under hidden topic. ×

2
subterranean(adjective, underground)
2
under wraps(expression, secret, clandestine, underground)
2
undercover(obscure, secret, unknown, concealed)
2
unknown(obscure, secret, concealed, unseen)
1
clandestine(secret, unknown, underground, concealed)
1
cryptic(obscure, secret, unknown, concealed)
1
esoteric(obscure, secret, unknown, concealed)
1
hush-hush(secret, clandestine, underground, undisclosed)
1
mystic(obscure, secret, unknown, concealed)
1
mystical(obscure, secret, unknown, concealed)
1
on the QT(expression, idiom, obscure, unknown)
1
private(obscure, secret, unknown, underground)
1
shadowy(cool, dark, secret, unknown)
1
sunken(adjective, underground)
1
surreptitious(secret, unknown, underground, concealed)
1
undisclosed(obscure, secret, unknown, concealed)
1
unrevealed(obscure, secret, unknown, concealed)
1
unseen(obscure, secret, unknown, concealed)
0
below ground(adjective, underground)
0
incognito(secret, clandestine, underground, undisclosed)
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APASmart Define. (2015). covered thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/covered/thesaurus/synonyms
ChicagoSmart Define. 2015. "covered thesaurus" https://smartdefine.org/covered/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, covered thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/covered/thesaurus/synonyms>.
MLASmart Define. "covered thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/covered/thesaurus/synonyms>