mountainous
Having many mountains; characterized by mountains; of the nature of a mountain; rough (terrain); rocky.
Other meanings
Resembling a mountain, especially in size; huge; towering.
Very difficult.
Word history
From Latin "mons" (montem).
Where this comes from
This definition is adapted from “mountainous” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.