- Definitions|1
- Thesaurus|860
- Abbreviations|0
49 entries under underhanded topic. ×
| surreptitious(adjective, dishonest, secret, hidden, spy) | |
| clandestine(adjective, adverb, show, dishonest, secret) | |
| secret(adjective, quiet, show, dishonest, hidden) | |
| covert(adjective, show, secret, reticent, hidden) | |
| hush-hush(adjective, adverb, show, informal, dishonest) | |
| furtive(adjective, dishonest, secret, reticent, hidden) | |
| private(adjective, secret, unknown, hidden, spy) | |
| stealthy(adjective, quiet, dishonest, secret, hidden) | |
| concealed(adjective, obscure, dishonest, secret, hidden) | |
| buried(adjective, secret, unknown, hidden, concealed) | |
| sneaking(adjective, dishonest, cunning, deceitful, secret) | |
| disguised(adjective, obscure, secret, hidden, clandestine) | |
| incognito(adjective, adverb, informal, secret, hidden) | |
| obscured(adjective, secret, hidden, underground, concealed) | |
| cloaked(obscure, secret, unknown, hidden, clandestine) | |
| masked(obscure, secret, unknown, hidden, concealed) | |
| on the QT(expression, adjective, idiom, adverb, dishonest) | |
| shifty(dishonest, cunning, deceitful, sneaky) | |
| shrouded(obscure, secret, unknown, hidden, clandestine) | |
| sub-rosa(adjective, dishonest, cunning, deceitful, secret) |
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| APA | Smart Define. (2015). undercover thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/undercover/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "undercover thesaurus" https://smartdefine.org/undercover/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, undercover thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/undercover/thesaurus/synonyms>. |
| MLA | Smart Define. "undercover thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/undercover/thesaurus/synonyms> |