- Definitions|1
- Thesaurus|860
- Abbreviations|0
29 entries under undisclosed topic. ×
| in ambush(expression, idiom, clandestine, underground) | |
| closet(noun, adjective, secret, sly, clandestine) | |
| on the QT(expression, adjective, idiom, adverb, dishonest) | |
| sneak(clandestine, underground, skulking) | |
| sub-rosa(adjective, dishonest, cunning, deceitful, secret) | |
| conspiratorial(clandestine, underground, sneaky, covert) | |
| deep(adjective, clandestine, underground) | |
| dissembled(secret, hidden, clandestine, underground) | |
| reticent(mysterious, private, taciturn, clandestine, underground) | |
| ambiguous(clandestine, underground) | |
| arcane(clandestine, underground) | |
| backdoor(clandestine, underground) | |
| classified(adjective, secret, clandestine, underground) | |
| discreet(clandestine, underground) | |
| dissimulated(clandestine, underground) | |
| enigmatical(clandestine, underground) | |
| inside(clandestine, underground) | |
| out-of-the-way(clandestine, underground) | |
| restricted(adjective, secret, clandestine, underground) | |
| retired(clandestine, underground) |
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| APA | Smart Define. (2015). undercover thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/undercover/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "undercover thesaurus" https://smartdefine.org/undercover/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, undercover thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/undercover/thesaurus/synonyms>. |
| MLA | Smart Define. "undercover thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/undercover/thesaurus/synonyms> |