Difficult
Difficult adjective - Requiring considerable physical or mental effort.
Hidden and difficult are semantically related. in complicated topic. In some cases you can use "Hidden" instead an adjective "Difficult".
Nearby Word: difficulty
Hidden
Hidden adjective - Screened or sequestered from view.
Mutual synonyms
Both words in one sentence
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You're exploring ruins of an abandoned section of town filled with irritating undead, and any valuables worth stealing are very well hidden and difficult to find.
Source: That One Level - The first nine questions are themselves a hidden purpose test of skill: The questions are too difficult for most Genin to know, but there are two fake candidates taking the test.
Source: Hidden Purpose Test - There are also seven hidden buttons that are deviously placed in very difficult spots throughout certain maps.
Cite this Source
Hidden and Difficult. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/difficult/hidden
Difficult & Hidden. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/difficult/hidden>.
Hidden or Difficult. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/difficult/hidden.
Google Ngram Viewer shows how "difficult" and "hidden" have occurred on timeline