64 entries under clandestine topic. ×
| secret(adjective, adverb, close, quiet, show) | |
| private(adjective, adverb, close, quiet, show) | |
| classified(adjective, close, show, intimate, secret) | |
| hush-hush(adjective, show, separate, informal, intimate) | |
| close(adjective, quiet, easy, friendly, warm) | |
| covert(adjective, close, quiet, separate, secret) | |
| esoteric(adjective, secret, private, underground) | |
| inside(adjective, show, intimate, secret, private) | |
| undercover(adjective, secret, hidden, spy) | |
| arcane(adjective, intimate, secret, private, restricted) | |
| restricted(adjective, close, show, secret, private) | |
| surreptitious(adjective, secret, hidden, spy) | |
| furtive(adjective, secret, hidden, spy) | |
| stealthy(adjective, secret, hidden, spy) | |
| undisclosed(adjective, personal, underground, hush-hush) | |
| backdoor(adjective, intimate, secret, private) | |
| backstairs(restricted, underground, discreet, undisclosed) | |
| mystic(underground, undisclosed) | |
| occult(noun, underground, undisclosed) | |
| reticent(underground, undisclosed) |
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| APA | Smart Define. (2015). confidential thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/confidential/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "confidential thesaurus" https://smartdefine.org/confidential/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, confidential thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/confidential/thesaurus/synonyms>. |
| MLA | Smart Define. "confidential thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/confidential/thesaurus/synonyms> |