MOUNTAINOUS Synonyms: 123 Similar and Opposite Words

mountainous

adjective

ˈmau̇n-tə-nəs

Definition of mountainous

as in vast

unusually large the seemingly mountainous obstacles he had to overcome while growing up

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Example Sentences

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Recent Examples of mountainous Road accidents are common in Pakistan because of poor road conditions, inadequate enforcement of traffic laws and unsafe driving practices, particularly in mountainous areas. — ABC News, 3 July 2026 There’s the Basque population in Boise, Idaho, whose ancestors traded a mountainous region between France and Spain for the American West in the hopes of finding gold but later turned to sheep herding. — Albert Sun, New York Times, 2 July 2026 Chattahoochee-Oconee National Forest Chattahoochee-Oconee National Forest is one of Georgia's most lush and verdant gems that stretches for 867,000 mountainous and wooded acres. — Kaitlyn Yarborough, Southern Living, 25 June 2026 Vineyards in Amarone della Valpolicella DOCG are situated north of Verona in a 20-mile-wide mountainous band at the foot of the Dolomites at altitudes ranging from 500 to 1,640 feet above sea level, with heights above 1,100 feet really making the difference. — Mike Desimone, Robb Report, 28 June 2026 See All Example Sentences for mountainous

Recent Examples of Synonyms for mountainous

Adjective

Here, that means Meta opening up the vast trove of content already on its platform to power a new AI tool.

— Los Angeles Times, Los Angeles Times, 9 July 2026
Additionally, our commerce writers and editors have previously covered a vast array of jeans styles, including the best butt-lifting jeans and best drawstring jeans.

— Jessie Quinn, StyleCaster, 9 July 2026

Definition of vast

Adjective

Benjamin Willis, a Lorain, Ohio, teenager and huge Marvel movie fan, opened his mouth in awe.

— Rodney Ho, AJC.com, 6 July 2026
That water supply is not the same water supply that goes toward agriculture, which accounts for a huge portion of the water used in the country, Anisfeld said.

— Jeanine Santucci, USA Today, 5 July 2026

Definition of huge

Adjective

Hagan Community Park in Rancho Cordova transformed from a serene hangout spot into an enormous fun-fest fit for a nation’s 250th birthday on Friday.

— Camila Pedrosa, Sacbee.com, 4 July 2026
Over time, these little communication shifts can create enormous changes in your home.

— Siggie Cohen, CNBC, 4 July 2026

Definition of enormous

Adjective

In a post on Thursday, NightmareEclipse said the defense-in-depth additions produce behavior that may allow attackers to exhaust all available space on a hard drive by writing massive amounts of data to it.

— Dan Goodin, ArsTechnica, 9 July 2026
Having two sinks was a plus, giving me and my husband our own areas, and the walk-in shower was massive.

— Condé Nast, Condé Nast Traveler, 9 July 2026