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 The quake was felt across Flores, a lush and mountainous island in the Sunda chain, which also includes tourist hotspot Bali. — Lex Harvey, CNN Money, 14 Aug. 2026 There were also reports of serious damage in Manizales, a city in Colombia’s mountainous coffee-growing region. — Antonio María Delgado, Miami Herald, 10 Aug. 2026 Big Sur has had several massive fires over the past 20 years in part due to its lack of roads, mountainous landscape and limited water sources, which make firefighting difficult. — Paul Rogers, Mercury News, 10 Aug. 2026 That could prolong heavy rain and raise the risk of flooding and landslides, especially in mountainous areas and along smaller rivers. — Reuters, NBC news, 9 Aug. 2026 See All Example Sentences for mountainous

Recent Examples of Synonyms for mountainous

Adjective

The Mexican navy searched a vast area of the Pacific Ocean by sea and air, eventually finding the two men floating in a large fishing cooler about 150 miles off the coast of Chiapas, a southern state in Mexico that borders Guatemala.

— Diego Mendoza, CNN Money, 21 Aug. 2026
Masanori Kumagai/Kyodo News via AP Hiraguchi cited surveys showing the vast majority of Japanese supporting the death penalty as an unavoidable option.

— CBS News, CBS News, 21 Aug. 2026

Definition of vast

Adjective

Granted, City have made a club-record signing in Elliot Anderson, and he is expected to make a huge difference, but everything else is pending.

— Nnamdi Onyeagwara, New York Times, 16 Aug. 2026
The baryon-junction model provides another possibility At RHIC energies, a proton contains a huge number of gluons.

— Rupendra Brahambhatt, Interesting Engineering, 16 Aug. 2026

Definition of huge

Adjective

Kneeling beside the fallen buck, Charles, an avid trophy bowhunter, ran his hands over the gigantic rack.

— Jeff Murray, Outdoor Life, 20 Aug. 2026
Lakes Mead and Powell, which are essentially one gigantic reservoir separated by the Grand Canyon, hold just under 60% of the total watercurrently stored in the Colorado River basin.

— Laura Paddison, CNN Money, 16 Aug. 2026

Definition of gigantic

Adjective

Chichibu made its money in silk, because the basin is poor country for rice but good country for mulberry, and the silk paid for the enormous festival floats the town is known for.

— Christopher Elliott, Forbes.com, 16 Aug. 2026
Its scale reflects the enormous electricity demand generated by advanced AI computing.

— Aamir Khollam, Interesting Engineering, 15 Aug. 2026

Definition of enormous

Adjective

According to a new study published in Geology, the massive escarpment formed around 800 million to 750 million years ago as the ancient supercontinent Rodinia began to break apart.

— Kaif Shaikh, Interesting Engineering, 21 Aug. 2026
Coach Keidane McAlpine hopes the Bulldogs, who dominated from start to finish on a massive stage, left a lasting impression.

— Sarah Spencer, AJC.com, 21 Aug. 2026

Definition of massive

Adjective

Yet that is the attitude that has led to tremendous underperformance by managers who think like that.

— Jim Cramer, CNBC, 16 Aug. 2026
Transit has this tremendous scale and a startling capacity to shift between the intimate and the grand, as well as an intricate architecture.

— Literary Hub, Literary Hub, 14 Aug. 2026