MOUNTAINOUS Synonyms: 123 Similar and Opposite Words

mountainous

adjective

ˈmau̇n-tə-nəs

Definition of mountainous next

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 Mountain West Hummingbirds like the broad-tailed, black-chinned, rufous, and calliope varieties arrive in the mountainous West in spring once flowers begin to bloom. —

Sydney Wingfield, Martha Stewart, 4 Mar. 2026 The burst pipe, which had been under repair for months, conveyed water from a mountainous tunnel filled by New Bullards Bar Reservoir downhill into the hydroelectric station, operated by Yuba Water. —

Jake Goodrick, Sacbee.com, 4 Mar. 2026 Everybody thinks that Nevada's desert and Nevada is mostly high desert, but the thing that people don't like, so Nevada is the most mountainous state in the US uh, in the con continental us. —

Outside Online, 4 Mar. 2026 Think of these reactions as a network of roads winding through a mountainous landscape, where each road represents a possible reaction step, from starting materials to final products. —

Chi Chen, IEEE Spectrum, 2 Mar. 2026 See All Example Sentences for mountainous

Recent Examples of Synonyms for mountainous

Adjective

The vast majority of the strikes against internal security services thus far have been conducted by the United States.

— Los Angeles Times, Los Angeles Times, 8 Mar. 2026
In the years following Deng Xiaoping’s turn toward a capitalist economy, some Chinese intellectuals felt a kind of spiritual malaise; Deng’s reforms had failed to provide moral direction for a vast and proud former empire.

— Chang Che, New Yorker, 8 Mar. 2026