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
In today’s world, glacial ice can persist in equatorial regions such as the Andes and Indonesia, but only on mountainous slopes several miles above sea level.
—
Laura Poppick
july 22, Literary Hub, 22 July 2025
However, the outfit had begun its preparations to enter the sport long ago, given the mountainous task of starting a new team from scratch.
—Saajan Jogia, MSNBC Newsweek, 21 July 2025
Flames were shooting straight up and seemed mountainous.
—The Editors, JSTOR Daily, 18 July 2025
The group lost most of its capacity to stage attacks in Turkey, was forced to take refuge in mountainous caves, and was stripped of operational freedom in mostly Kurdish southern Turkey.
—Ragip Soylu, Time, 18 July 2025
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Laura Poppick
july 22, Literary Hub, 22 July 2025
However, the outfit had begun its preparations to enter the sport long ago, given the mountainous task of starting a new team from scratch.
—Saajan Jogia, MSNBC Newsweek, 21 July 2025
Flames were shooting straight up and seemed mountainous.
—The Editors, JSTOR Daily, 18 July 2025
The group lost most of its capacity to stage attacks in Turkey, was forced to take refuge in mountainous caves, and was stripped of operational freedom in mostly Kurdish southern Turkey.
—Ragip Soylu, Time, 18 July 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 26 Jul. 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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