as in vast
unusually large
the seemingly mountainous obstacles he had to overcome while growing up
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Recent Examples of mountainous
The mansions are in the Bio Barray neighborhood, part of which has been built illegally in the mountainous Western Area Peninsula National Park, which Sierra Leone’s government has proposed as a UNESCO World Heritage Site.
—
ABC News, 18 Feb. 2026
On a multi-acre mountainous site, dotted with lodgepole pine trees, Miller-Roodell Architects designed a 9,000-square-foot guest barn and separate 4,500-square-foot guest cabin to host the homeowners’ friends and family year-round.
—Elizabeth Fazzare, Architectural Digest, 18 Feb. 2026
As of Monday afternoon in Italy, there were 14 countries with more gold at these Games than Canada, including that mountainous country with so many ski chalets and ice tracks, Great Britain (oof).
—Sean Gregory, Time, 16 Feb. 2026
The Sierra Nevada red fox is a distinct lineage from the common red fox known for residing in high-elevation, remote mountainous regions.
—Clara Harter, Los Angeles Times, 11 Feb. 2026
See All Example Sentences for mountainous
ABC News, 18 Feb. 2026
On a multi-acre mountainous site, dotted with lodgepole pine trees, Miller-Roodell Architects designed a 9,000-square-foot guest barn and separate 4,500-square-foot guest cabin to host the homeowners’ friends and family year-round.
—Elizabeth Fazzare, Architectural Digest, 18 Feb. 2026
As of Monday afternoon in Italy, there were 14 countries with more gold at these Games than Canada, including that mountainous country with so many ski chalets and ice tracks, Great Britain (oof).
—Sean Gregory, Time, 16 Feb. 2026
The Sierra Nevada red fox is a distinct lineage from the common red fox known for residing in high-elevation, remote mountainous regions.
—Clara Harter, Los Angeles Times, 11 Feb. 2026
See All Example Sentences for mountainous
Recent Examples of Synonyms for mountainous
Adjective
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Aid groups say the true war death toll could be many times higher, as the fighting in vast and remote areas impedes access.—
Arkansas Online,
Arkansas Online,
21 Feb. 2026
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The sponsors said the vast majority of Floridians would have their citizenship checked seamlessly by matching the voter registration database with REAL ID records maintained by the Department of Highway Safety and Motor Vehicles, the state driver license agency.—
Anthony Man,
Sun Sentinel,
21 Feb. 2026
Adjective
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The residences are huge, and the life is peaceful – at least west of Kyiv.—
Christian Edwards,
CNN Money,
21 Feb. 2026
-
The Gardens are relatively easy to navigate, but huge and sprawling.—
Condé Nast,
Condé Nast Traveler,
21 Feb. 2026
Adjective
-
Lurking behind is the orange and white bulk of the Artemis 2 Space Launch System rocket and Orion spacecraft, which sits unseen in this photo at the white tip of the gigantic launch vehicle.—
Anthony Wood,
Space.com,
13 Feb. 2026
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The Anterselva Biathlon Arena is a legit sporting stadium, with thousands of permanent seats, a gigantic video board, VIP seating areas and a vast network of tunnels connecting it all.—
Zack Pierce,
New York Times,
13 Feb. 2026
Adjective
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Naturalists will take to the property's enormous, 116-year-old Indian banyan tree.—
Condé Nast,
Condé Nast Traveler,
20 Feb. 2026
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Her fluent Mandarin also gives her access to an enormous market in China, where her face is splashed across billboards and television screens.—
Jessie Yeung,
CNN Money,
19 Feb. 2026
Adjective
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So yeah, who is going to go into the Olympics, with everything that’s at stake, with the world shifting and media behavior, constantly shifting, and be absolutely confident that that big, giant American audience is going to reassemble?—
Sara Germano,
Sportico.com,
18 Feb. 2026
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Longtime readers may remember a proposal to recreate the experience of standing on the the Moon inside a giant spherical structure here on Earth.—
New Atlas,
New Atlas,
18 Feb. 2026
Adjective
-
Privacy concerns about using massive DNA databases in law enforcement investigations continue – especially for services that exist mostly to satisfy people’s personal curiosity about their heritage.—
Andy Rose,
CNN Money,
19 Feb. 2026
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Avalanches are rapid, massive slides of snow, ice, rock and soil that can be caused by storms, earthquakes or snowpack deterioration.—
Ramon Padilla,
USA Today,
19 Feb. 2026
Adjective
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There is a tremendous drive to acquire money to support the work of faculty and staff.—
Brian Herman,
Fortune,
20 Feb. 2026
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As in most deals that appear to be too good to be true, there is a tremendous cost to this tax credit program.—
Chicago Tribune,
Chicago Tribune,
20 Feb. 2026
Adjective
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Minutewomen coach Rebecca Trachsel and her girls were thrilled with the colossal win.—
Hannah Hughes,
Boston Herald,
16 Feb. 2026
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The European Southern Observatory has released a new view of the Extremely Large Telescope (ELT), as its colossal outer dome nears completion at Cerro Armazones in Chile's Atacama Desert.—
Anthony Wood,
Space.com,
16 Feb. 2026
Cite this Entry
“Mountainous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/mountainous. Accessed 22 Feb. 2026.
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