103 entries under hidden topic. ×
| difficult(adjective, hard, obscure, dark, heavy) | |
| dissembled(adjective, clandestine, underground, undisclosed) | |
| enigmatical(adjective, strange, supernatural, spiritual) | |
| fraudulent(dishonest, cunning, deceitful, private) | |
| inactive(adjective, mild, shy, stable, peaceful) | |
| inexplicable(adjective, obscure, dark, strange, uncertain) | |
| knotty(adjective, evil, deep, mysterious) | |
| mysterial(adjective, mysterious, supernatural, spiritual) | |
| on the QT(expression, adjective, idiom, dishonest, private) | |
| sphinxlike(adjective, obscure, dark, strange, uncertain) | |
| tucked away(expression, close, quiet, private) | |
| unaccountable(adjective, mysterious, supernatural, spiritual) | |
| unauthorized(adjective, private, sneaky, covert) | |
| under the table(expression, adjective, sensitive, clandestine) | |
| complicated(adjective, evil, deep, mysterious) | |
| creep(spy, covert) | |
| intelligence(spy, covert) | |
| mysterious blank(expression, unfathomable, incomprehensible, enigmatic) | |
| poker-faced(adjective, unfathomable, incomprehensible, enigmatic) | |
| slinking(private, sneaky, covert) |
For more, visit
Secret on
Power Thesaurus
| APA | Smart Define. (2016). secret thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/secret/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "secret thesaurus" https://smartdefine.org/secret/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, secret thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/secret/thesaurus/synonyms>. |
| MLA | Smart Define. "secret thesaurus" 31 March 2016. Web. 27 September 2026. <https://smartdefine.org/secret/thesaurus/synonyms> |