Dictionary.com
Thesaurus.com
Synonyms

mountainous

American  
[moun-tn-uhs] / ˈmaʊn tn əs /

adjective

  1. abounding in mountains.

    a mountainous wilderness.

  2. of the nature of a mountain.

  3. resembling a mountain or mountains, as being very large and high.

    mountainous waves.


mountainous British  
/ ˈmaʊntɪnəs /

adjective

  1. of or relating to mountains

    a mountainous region

  2. like a mountain, esp in size or impressiveness

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • mountainously adverb
  • mountainousness noun
  • nonmountainous adjective
  • nonmountainously adverb
  • semimountainous adjective
  • semimountainously adverb
  • unmountainous adjective

Etymology

Origin of mountainous

First recorded in 1400–50, mountainous is from the late Middle English word mounteynous. See mountain, -ous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Day two started with single track and jeep trails that meandered through rolling, mountainous terrain.

From The Wall Street Journal

They also could operate for weeks, if not months, in Iran’s mountainous coastline, even if “communication with Tehran frays.”

From MarketWatch

An AFP team of journalists met Haftan and his fellow fighters in a bunker carved into a rugged mountainous area, now blanketed with snow, near the border with Iran.

From Barron's

Parks and Blea flipped on their afterburners and went through a series of tight turns to avoid being downed over the mountainous terrain.

From The Wall Street Journal

Half a year on from the fatal shooting, search parties are still scouring the mountainous ranges surrounding the small Australian town of Porepunkah to find him.

From BBC