- Definitions|1
- Thesaurus|293
- Abbreviations|0
| unvalued | |
| virtual(adjective, essence) | |
| without a name(expression, idiom) | |
| you know who | |
| abstruse(clandestine, underground, undisclosed) | |
| ambiguous(clandestine, underground, undisclosed) | |
| arcane(clandestine, underground, undisclosed) | |
| bootless | |
| buttoned up(expression, sensitive, sub-rosa) | |
| cloak-and-dagger(clandestine, underground, undisclosed) | |
| closet(clandestine, underground, undisclosed) | |
| clouded(clandestine, underground, undisclosed) | |
| conspiratorial(clandestine, underground, undisclosed) | |
| covered(clandestine, underground, undisclosed) | |
| deep(clandestine, underground, undisclosed) | |
| difficult | |
| disowned | |
| enigmatical(clandestine, underground, undisclosed) | |
| esoteric(clandestine, underground, undisclosed) | |
| for eyes only(expression, idiom, sensitive, sub-rosa) |
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| APA | Smart Define. (2015). unacknowledged thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unacknowledged/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unacknowledged thesaurus" https://smartdefine.org/unacknowledged/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, unacknowledged thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unacknowledged/thesaurus/synonyms>. |
| MLA | Smart Define. "unacknowledged thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/unacknowledged/thesaurus/synonyms> |