- Definitions|2
- Thesaurus|2.1k
- Abbreviations|0
94 entries under hidden topic. ×
| in holes and corners(expression, idiom, fraudulent) | |
| incog(adjective, obscure, new, mysterious) | |
| indispensable(adjective, original, basic, fundamental) | |
| intelligence(secret, spy, covert) | |
| knotty(adjective, evil, deep, mysterious) | |
| necessary(adjective, original, basic, fundamental) | |
| needful(adjective, original, basic, fundamental) | |
| put in the hole(expression, adjective, idiom, covered) | |
| root(adjective, original, basic, fundamental) | |
| spy(secret, covert) | |
| stealth(secret, spy, covert) | |
| tucked away(expression, adjective, covered, obscured) | |
| under-the-counter | |
| underneath(secret, spy, covert) |
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| APA | Smart Define. (2015). concealed thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/concealed/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "concealed thesaurus" https://smartdefine.org/concealed/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, concealed thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/concealed/thesaurus/synonyms>. |
| MLA | Smart Define. "concealed thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/concealed/thesaurus/synonyms> |