Synonyms of subterranean

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

Synonyms & Similar Words

• underground
• subsurface
• belowground

Antonyms & Near Antonyms

• surface
• aboveground

Example Sentences

Recent Examples of subterranean

Lielle, set in a glamorous subterranean room on West Pico Boulevard, is the culmination of Swedish chef Marcus Jernmark’s years of experience in high-end temples around the world. — Bill Addison, Los Angeles Times, 24 Oct. 2026

This infrastructure combines an above-ground encapsulation plant with a subterranean repository, known as Onkalo. — Mrigakshi Dixit, Interesting Engineering, 23 Oct. 2026

After the couple separated in 2015, Affleck reportedly lived for a time in the subterranean guesthouse. — Abby Montanez, Robb Report, 23 Oct. 2026

Prada Galleria now includes a new subterranean passage under the landmarked 19th-century shopping arcade that connects the women’s store with the men’s one, linking two sides of the central octagon. — Luisa Zargani, Footwear News, 22 Oct. 2026