moun·tain·ous | \ˈmau̇n-tə-nəs, 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

Authorities have been rushing to extract the boys, ages 11-16, and their coach from the cave as the annual monsoon bears down on the mountainous region in far northern Chiang Rai province. Kaweewit Kaewjinda And Stephen Wright,, "Rescue of remaining 4 boys, coach from flooded Thai cave could take two operations," 9 July 2018 And now, 2 Chainz has shared a photo of a birthday cake inspired by the mountainous scenery featured on the cover of Kanye's new album, Ye. Mitchell Peters, Billboard, "2 Chainz Celebrates Kanye West's Birthday With Cake Inspired by 'Ye' Album Cover," 10 June 2018 All 11 people aboard a plane that crashed Tuesday have been rescued in mountainous terrain on Prince of Wales Island in Alaska, officials said. Time, "All 11 People on Board Survived Alaska Plane Crash, Coast Guard Says," 11 July 2018 All 11 people aboard a plane that crashed Tuesday have been rescued in mountainous terrain on Prince of Wales Island in Alaska, officials said. Fox News, "Coast Guard: All 11 rescued from crashed plane in Alaska," 10 July 2018 Inside the building, Z-scale model trains, which are the smallest model, will run through mini mountainous terrains and towns, which are meant to evoke the terrain from the Rocky Mountains to New England, said David George, 80, from Spring. Mayra Cruz, Houston Chronicle, "Tomball to unveil model railroads that depict its history," 7 July 2018 Enough rain may fall to cause localized flash flooding and mudslides, especially along steep hillsides and in mountainous terrain. Editors, USA TODAY, "Thai cave rescue mission, World Cup, Hurricane Beryl: 5 things to know this weekend," 7 July 2018 North Korea has produced enough plutonium to build 30 to 60 nuclear warheads, which are most likely hidden deep in its mountainous terrain. Barbara Demick,, "Singapore summit agreement recycles old deals and defers the hard work," 13 June 2018 Freeport’s local unit studied 14 alternatives for tailings disposal -- including dams and pipelines -- and concluded all were too risky in a mountainous terrain prone to earthquakes and heavy rainfall. Danielle Bochove,, "Giant Waste-Spewing Mine Turns Into a Battleground in Indonesia," 5 June 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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Last Updated

22 Oct 2018

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

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English Language Learners Definition of mountainous

: having many mountains

: extremely large


moun·tain·ous | \ˈmau̇n-tə-nəs \

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).


exaggeratedly or childishly emotional

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