Difficult
Difficult adjective - Requiring considerable physical or mental effort.
Hilly and difficult are semantically related. In some cases you can use "Hilly" instead an adjective "Difficult".
Nearby Word: difficulty
Mutual synonyms
Both words in one sentence
-
The New Deal brought electricity to the region in the 1930s-1950s, and so TV and radio broke the region's isolation somewhat — although the hilly terrain makes transmission and reception difficult.
Source: Useful Notes / Appalachia -
The Computer Is a Cheating Bastard: there's a case that helps the player in Beachhead in Battalion Wars 1; the CPU-controlled Artillery can snipe off the infantry climbing up the hilly terrain that makes seeing them difficult, from inside the fort on top of the hills.
Cite this Source
Hilly and Difficult. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/difficult/hilly
Difficult & Hilly. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/difficult/hilly>.
Hilly or Difficult. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/difficult/hilly.
Google Ngram Viewer shows how "difficult" and "hilly" have occurred on timeline