| conspiratorial(adjective, obscure, unknown, clandestine, underground) | |
| covertly | |
| detached(adjective, single, alone, isolation, apart) | |
| different(adjective, single, alone, isolation, apart) | |
| enlisted man(noun, expression, idiom) | |
| extraordinary(adjective, unusual, exceptional, special, particular) | |
| first-class(noun, informal, service, soldier, sapper) | |
| furtively | |
| genitals | |
| in private(expression, idiom, mysterious, secret, reticent) | |
| in secret(expression, idiom, concealment) | |
| inaccessible | |
| infantry(noun, service, combatant, soldier, sapper) | |
| insular(close, quiet, isolated, secluded, reclusive) | |
| non-governmental | |
| nonpublic(adjective, intimate, personal, confidential, hush-hush) | |
| obscure(adjective, quiet, remote, secret, unknown) | |
| on the sly(expression, idiom, secret, hidden, sneaky) | |
| personally | |
| retiring |
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| APA | Smart Define. (2016). private thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/private/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "private thesaurus" https://smartdefine.org/private/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, private thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/private/thesaurus/synonyms>. |
| MLA | Smart Define. "private thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/private/thesaurus/synonyms> |