| confidentiality | |
| distant(strange, new, remote, indefinite, unidentified) | |
| intimate | |
| abnormal | |
| abstruse(clandestine, underground, undisclosed) | |
| alias | |
| ambiguous(clandestine, underground, undisclosed) | |
| arcane(clandestine, underground, undisclosed) | |
| asleep | |
| bearded(adjective, disguise) | |
| behind a screen(expression, idiom, concealment) | |
| behind one's back(verb, phrasal verb, concealment) | |
| behind the curtain(expression, idiom, concealment) | |
| behind the scenes(expression, idiom, concealment) | |
| camera | |
| classified(clandestine, underground, undisclosed) | |
| cloak-and-dagger(clandestine, underground, undisclosed) | |
| cloak and dagger(expression, idiom, restricted, discreet) | |
| clouded(clandestine, underground, undisclosed) | |
| confidentially |
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| APA | Smart Define. (2015). incognito thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/incognito/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "incognito thesaurus" https://smartdefine.org/incognito/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, incognito thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/incognito/thesaurus/synonyms>. |
| MLA | Smart Define. "incognito thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/incognito/thesaurus/synonyms> |