mountainous

adjective moun·tain·ous \ ˈmau̇n-tə-nəs , ˈmau̇nt-nəs \
|Updated on: 13 Aug 2018

Definition of mountainous

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

mountainously

adverb

mountainousness

noun

Examples of mountainous in a Sentence

  1. the seemingly mountainous obstacles he had to overcome while growing up

Recent Examples of mountainous from the Web

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.

First Known Use of mountainous

14th century

in the meaning defined at sense 1

See Words from the same year
NEW! Time Traveler

MOUNTAINOUS Defined for English Language Learners

mountainous

Definition of mountainous for English Language Learners

  • : having many mountains

  • : extremely large


MOUNTAINOUS Defined for Kids

mountainous

adjective moun·tain·ous \ ˈmau̇n-tə-nəs \

Definition of mountainous for Students

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


Seen and Heard

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

very hard to disturb or upset

Get Word of the Day daily email!

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet-pasta-spelling-help
  • Which is the correct spelling?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!