| secret(adjective, unknown, hidden, clandestine, undisclosed) | |
| secretively(adverb, close, hideaway, arcane, stealth) | |
| surreptitiously(adverb, close, hideaway, arcane, stealth) | |
| anonym | |
| covert(adjective, secret, hidden, clandestine, underhanded) | |
| on the sly(expression, idiom, adverb, furtively) | |
| private(adjective, secret, hidden, spy, clandestine) | |
| under cover(expression, adverb, secret, spy, covert) | |
| innominate | |
| masked(adjective, disguise) | |
| X(strange, new, remote, unknown, undisclosed) | |
| bearding | |
| clandestine(secret, hidden, spy, underground, undisclosed) | |
| closet(clandestine, underground, undisclosed) | |
| confidential(adjective, secret, restricted, hidden, spy) | |
| furtive(adjective, close, secret, hidden, spy) | |
| masquerading(adjective, disguise) | |
| name | |
| namelessness | |
| pseudonym(noun, name, informal) |
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| APA | Smart Define. (2015). incognito thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/incognito/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "incognito thesaurus" https://smartdefine.org/incognito/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, incognito thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/incognito/thesaurus/synonyms>. |
| MLA | Smart Define. "incognito thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/incognito/thesaurus/synonyms> |