Hidden
Hidden adjective - Screened or sequestered from view.
Undercover is a synonym for hidden in unseen topic. In some cases you can use "Undercover" instead an adjective "Hidden".
Undercover
Undercover adjective - Undertaken or done so as to escape being observed or known by others.
Usage example: an undercover operation to infiltrate the terrorist organization
Hidden is a synonym for undercover in secret topic. You can use "Hidden" instead an adjective "Undercover".
Mutual synonyms
Related pairs
- confidential and hidden
- confidential and undercover
- obscure and hidden
- obscure and undercover
- cryptic and hidden
- cryptic and undercover
- esoteric and hidden
- esoteric and undercover
- secluded and hidden
- secluded and undercover
- private and hidden
- private and undercover
- secret and hidden
- secret and undercover
Both words in one sentence
-
Hidden Depths: Frank bumbles at just about everything, and is even worse when he goes undercover.
Source: Series / Police Squad! -
All 3 of them also worked undercover as showgirls, with their lab hidden in their dressing room.
Source: Series / Get Smart -
Hidden Depths: Bob Sweet, who at first seems to be a womanizing buffoon, is actually an undercover government agent chasing the Big Bad.
Source: Film / Silver Streak
Cite this Source
Undercover and Hidden. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/hidden/undercover
Hidden & Undercover. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/hidden/undercover>.
Undercover or Hidden. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/hidden/undercover.
Google Ngram Viewer shows how "hidden" and "undercover" have occurred on timeline