63 entries under clandestine topic. ×
| discreet(adjective, personal, underground, undisclosed) | |
| retired(verb, adjective, close, quiet, obscure) | |
| sneak(adjective, underground, undisclosed, underhand) | |
| unacknowledged(adjective, sensitive, unknown, undisclosed) | |
| backstairs(adjective, sensitive, underground, undisclosed) | |
| conspiratorial(adjective, hidden, underground, undisclosed) | |
| incognito(adjective, unknown, hidden, undisclosed) | |
| under-the-table(adjective, sensitive, private, hidden) | |
| ambiguous(adjective, obscure, dark, uncertain, mysterious) | |
| backdoor(adjective, sensitive, intimate, private, hidden) | |
| reticent(adjective, quiet, humble, distant, minor) | |
| top secret(expression, adjective, sensitive, private, hidden) | |
| sub-rosa(adjective, sensitive, dishonest, cunning, deceitful) | |
| top-secret(adjective, underground, undisclosed, classified) | |
| unenlightened(adjective, hidden, underground, undisclosed) | |
| unfrequented(adjective, close, quiet, mild, shy) | |
| unintelligible(adjective, obscure, dark, superior, uncertain) | |
| dissembled(adjective, hidden, underground, undisclosed) | |
| dissimulated(adjective, underground, undisclosed, underhand) | |
| enigmatical(adjective, strange, supernatural, hidden, spiritual) |
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| APA | Smart Define. (2016). secret thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/secret/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "secret thesaurus" https://smartdefine.org/secret/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, secret thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/secret/thesaurus/synonyms>. |
| MLA | Smart Define. "secret thesaurus" 31 March 2016. Web. 28 September 2026. <https://smartdefine.org/secret/thesaurus/synonyms> |