moun·​tain·​ous | \ ˈmau̇n-tə-nəs How to pronounce mountainous (audio) , ˈmau̇nt-nəs\

Definition of mountainous

1 : containing many mountains
2 : resembling a mountain : huge

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Other Words from mountainous

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

Kate and Prince William traveled to the mountainous region of Lake District (where Kate spent happy childhood vacations) on Tuesday to talk to farmers — and get their hands dirty by helping with a bit of sheep shearing. Erin Hill,, "Kate Middleton Just Sheared a Wildly Kicking Sheep for the First Time — and Didn’t Flinch Once!," 11 June 2019 The highlands are a mountainous region in central Guatemala, where the indigenous population is concentrated. Rachel Nolan, Harper's magazine, "Destined for Export," 10 June 2019 In the mountainous forests of New Guinea, scientists have described a new kind of tree frog whose males sport a single, fleshy spike on their nose. Jason Bittel, National Geographic, "New Pinocchio frog species has a strange, pointy nose," 7 June 2019 The mountainous Idaho landscape was also the site of Bezos’s first steps toward acquiring the Washington Post. Janelle Nanos,, "Billionaire summer camp begins in Sun Valley," 11 July 2018 Nearby regions — all part of the verdant and mountainous Cevennes — also were hit with flooding. Fox News, "French rescuers evacuate 750 campers amid flash floods," 9 Aug. 2018 With the eye of Typhoon Maria remaining offshore, the rugged and mountainous terrain of Taiwan will only have a limited effect in weakening the storm. Greg Porter, Washington Post, "Typhoon Maria, lashing Taiwan with strong winds and heavy rain, is headed for China’s east coast," 10 July 2018 This summer, Off the Map Travel is introducing three-night trips on Norway’s Lofoten Islands, a mountainous and fjord-filled region above the Arctic Circle, based in tepee tents decorated in the style of the indigenous Sami people. Elaine Glusac, New York Times, "Glamping Slips Into the Mainstream," 15 June 2018 The terrain was steep and mountainous and the weather was windy and cloudy making firefighting difficult from the ground and the air. Lyndsay Winkley,, "Three dead in plane crash on Volcan Mountain; fire 100 percent contained," 13 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mountainous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of mountainous

14th century, in the meaning defined at sense 1

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Statistics for mountainous

Last Updated

18 Jun 2019

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Time Traveler for mountainous

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

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More Definitions for mountainous



English Language Learners Definition of mountainous

: having many mountains
: extremely large


moun·​tain·​ous | \ ˈmau̇n-tə-nəs How to pronounce mountainous (audio) \

Kids Definition of mountainous

1 : having many mountains mountainous country
2 : like a mountain in size : huge a mountainous pile

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Comments on mountainous

What made you want to look up mountainous? Please tell us where you read or heard it (including the quote, if possible).


to take the place or position of

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