moun·​tain·​ous ˈmau̇n-tə-nəs How to pronounce mountainous (audio)
: containing many mountains
: resembling a mountain : huge
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 Many travelers would fly into the airport in town then immediately move onto more bucolic, mountainous retreats in destinations like Vail, Aspen, and Telluride. Chadner Navarro, Travel + Leisure, 9 Apr. 2024 Between the Continental Divide along the state’s eastern side and other mountainous areas in the central and western parts, the Gem State has 36 major mountain ranges. Shaun Goodwin, Idaho Statesman, 9 Apr. 2024 The singer also held her son while enjoying the mountainous scenery from a balcony. Escher Walcott, Peoplemag, 9 Apr. 2024 Hualien County, parts of which are mountainous and remote, is home to about 300,000 people on the island’s sparsely populated east coast. Helen Regan, CNN, 4 Apr. 2024 Taiwan's major airports, ports, and railways are all operating normally in major cities, according to the Taiwan Tourism Administration, which noted transit capabilities may vary by region, especially in the eastern mountainous area. Rachel Chang, Condé Nast Traveler, 4 Apr. 2024 Those seedlings were of no use in the mountainous and coastal West, with its cedars, firs and Ponderosa pines. Lydia Depillis, New York Times, 4 Apr. 2024 In the mountainous, desert landscape of the Tibetan Plateau, a small, scaly reptile scurries across the sand. Irene Wright, Miami Herald, 3 Apr. 2024 Footage of the scene broadcast by local news channel eNCA shows a charred, mangled bus at the bottom of a rocky ditch in a mountainous area near Mokopane, South Africa. Sammy Westfall, Washington Post, 28 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'mountainous.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Middle English mounteynous, borrowed from Anglo-French muntaignus, from muntaigne, mountaigne mountain + -us -ous

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of mountainous was in the 14th century

Dictionary Entries Near mountainous

Cite this Entry

“Mountainous.” Dictionary, Merriam-Webster, Accessed 19 Apr. 2024.

Kids Definition


moun·​tain·​ous ˈmau̇nt-ᵊn-əs How to pronounce mountainous (audio)
: having many mountains
: resembling a mountain : huge

More from Merriam-Webster on mountainous

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