mountainous
adjective
moun·tain·ous
ˈmau̇n-tə-nəs 
ˈmau̇nt-nəs
mountainously
adverb
mountainousness
noun
Examples of mountainous in a Sentence
the seemingly mountainous obstacles he had to overcome while growing up
Recent Examples on the Web
The alpine chough, a member of the crow family, lives in mountainous regions across Europe, North Africa and Asia.
—
Scott Travers, Forbes.com, 14 June 2025
Native to northern Vietnam, especially in humid, mountainous forests and limestone karst landscapes, the barking frog often hides in tree holes or rocky crevices near water.
—Alice Gibbs, MSNBC Newsweek, 11 June 2025
Next, the live gameplay demonstration delighted fans with the opening sequence of the game, which features Sam trying to get back home in an expansive, mountainous region.
—Katie Campione, Deadline, 9 June 2025
The sisters were found about 30 minutes northwest, in the Wenatchee River Ranger district, a remote, mountainous region of Washington that encompasses approximately 696,000 acres.
—Alaa Elassar, CNN Money, 8 June 2025
See All Example Sentences for mountainous
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Scott Travers, Forbes.com, 14 June 2025
Native to northern Vietnam, especially in humid, mountainous forests and limestone karst landscapes, the barking frog often hides in tree holes or rocky crevices near water.
—Alice Gibbs, MSNBC Newsweek, 11 June 2025
Next, the live gameplay demonstration delighted fans with the opening sequence of the game, which features Sam trying to get back home in an expansive, mountainous region.
—Katie Campione, Deadline, 9 June 2025
The sisters were found about 30 minutes northwest, in the Wenatchee River Ranger district, a remote, mountainous region of Washington that encompasses approximately 696,000 acres.
—Alaa Elassar, CNN Money, 8 June 2025
See All Example Sentences for mountainous
Cite this Entry
“Mountainous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mountainous. Accessed 20 Jun. 2025.
Copy CitationKids Definition
mountainous
adjective
moun·tain·ous
ˈmau̇nt-ᵊn-əs
-nəs
1
: having many mountains
2
: resembling a mountain : huge
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