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
Heavy rainfall to the east and northeast of the storm may occur in portions of northwestern Mexico, from the states of Colima to Sinaloa, the hurricane center said, with flash flooding possible, especially in areas of mountainous terrain.
—
Dinah Voyles Pulver, USA Today, 3 Sep. 2025
Dadu mountain lizards live in a mountainous river valley between elevations of 7,100 to 7,600 feet, the study said.
—Aspen Pflughoeft, Miami Herald, 3 Sep. 2025
At the time of Sunday’s disaster, the Taliban government was using helicopters to rescue those affected by the quake, as the mountainous terrain and landslides triggered by the natural disaster made providing aid challenging.
—David Chiu, People.com, 2 Sep. 2025
Heavy rainfall east and northeast of the depression is expected to continue affecting parts of northwestern Mexico, from Colima to Sinaloa, on Wednesday, bringing the risk of isolated flash flooding in mountainous areas, according to the NHC.
—Joe Edwards, MSNBC Newsweek, 2 Sep. 2025
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Dinah Voyles Pulver, USA Today, 3 Sep. 2025
Dadu mountain lizards live in a mountainous river valley between elevations of 7,100 to 7,600 feet, the study said.
—Aspen Pflughoeft, Miami Herald, 3 Sep. 2025
At the time of Sunday’s disaster, the Taliban government was using helicopters to rescue those affected by the quake, as the mountainous terrain and landslides triggered by the natural disaster made providing aid challenging.
—David Chiu, People.com, 2 Sep. 2025
Heavy rainfall east and northeast of the depression is expected to continue affecting parts of northwestern Mexico, from Colima to Sinaloa, on Wednesday, bringing the risk of isolated flash flooding in mountainous areas, according to the NHC.
—Joe Edwards, MSNBC Newsweek, 2 Sep. 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 9 Sep. 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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