Difficult
Difficult adjective - Requiring considerable physical or mental effort.
Mountainous and difficult are semantically related. In some cases you can use "Mountainous" instead an adjective "Difficult".
Nearby Word: difficulty
Mountainous
Mountainous adjective - Unusually large.
Difficult and mountainous are semantically related. Sometimes you can use "Difficult" instead an adjective "Mountainous".
Nearby Words: mountain, mountaineer
Both words in one sentence
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Much like the in-game Bern, it was also famed for being mountainous and difficult to assail.
Source: Video Game / Fire Emblem Elibe
Cite this Source
Mountainous and Difficult. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/difficult/mountainous
Difficult & Mountainous. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/difficult/mountainous>.
Mountainous or Difficult. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/difficult/mountainous.
Google Ngram Viewer shows how "difficult" and "mountainous" have occurred on timeline