- Definitions|2
- Thesaurus|2.2k
- Abbreviations|0
112 entries under secret topic. ×
| undetected(adjective, unseen) | |
| unforthcoming(adjective, quiet, reserved, private) | |
| unidentified(strange, new, remote, mysterious) | |
| creep(spy, covert) | |
| dissembled(clandestine, underground, undisclosed, underhanded) | |
| hidden from sight(expression, adjective, idiom, concealed) | |
| hidden from view(expression, adjective, idiom, concealed) | |
| intelligence(spy, covert) | |
| spy | |
| taciturn(adjective, quiet, reserved, private) | |
| unauthorized(private, sneaky, covert) | |
| underneath(spy, covert) |
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| APA | Smart Define. (2015). hidden thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/hidden/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "hidden thesaurus" https://smartdefine.org/hidden/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, hidden thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/hidden/thesaurus/synonyms>. |
| MLA | Smart Define. "hidden thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/hidden/thesaurus/synonyms> |