Difficult
Difficult adjective - Requiring considerable physical or mental effort.
Subtle and difficult are semantically related. in complicated topic. In some cases you can use "Subtle" instead an adjective "Difficult".
Nearby Word: difficulty
Both words in one sentence
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Usually subtle and difficult to tell whether anything magical actually happened or not.
Source: Literature / Greenwater - It's difficult to tell what is supposed to be canon, and what is just meant as subtle easter eggs for Toho fans.
Source: Negative Continuity - However it is explained that the planners of the invasion had feared that human military technology might make them difficult prey if the invaders were not unusually subtle about it.
Source: Literature / The Tripods
Cite this Source
Subtle and Difficult. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/difficult/subtle
Difficult & Subtle. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/difficult/subtle>.
Subtle or Difficult. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/difficult/subtle.
Google Ngram Viewer shows how "difficult" and "subtle" have occurred on timeline