SUBTERRANEAN Synonyms: 5 Similar and Opposite Words

subterranean

adjective

ˌsəb-tə-ˈrā-nē-ən

as in underground

being, situated, or operating beneath the surface of the earth a subterranean bunker that supposedly could withstand even an atomic blast

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of subterranean Pests with soft exoskeletons, such as snails, slugs, and worker-caste subterranean termites, are more vulnerable to salt applications, McHale says. —

Olivia McIntosh, Martha Stewart, 6 June 2026 Somehow this brief but meaningful chapter remained subterranean. —

Literary Hub, 3 June 2026 There have been 99 subterranean passages discovered in the Southern District of California since 1993, according to the Justice Department. —

Clara Harter, Los Angeles Times, 2 June 2026 The months-long investigation culminated in the seizure of more than a ton of cocaine and the arrest of four men accused of using the subterranean passageway to funnel drugs into the United States, according to a June 1 news release from federal prosecutors in Southern California. —

Anthony Thompson, USA Today, 2 June 2026 See All Example Sentences for subterranean

Recent Examples of Synonyms for subterranean

underground

Adjective

The park combines green space with underground stormwater detention systems that can hold roughly two million gallons during a major rain event.

— Ravi S. Bhalla, Fortune, 13 June 2026
Subway cars erupted in cheers as fans peeped the winning shot on their cellphones, their feeds interrupted at times by spotty underground reception.

— ABC News, ABC News, 13 June 2026