subterranean

Meaning

Existing, occurring, or done under the earth's surface.

Existing, occurring, or done under the earth’s surface; hidden or secret.

Example Sentences

Subterranean water sources help sustain agriculture.

The miners discovered a subterranean tunnel.

Synonyms

underground, buried, concealed, hidden, secret

Entry 1

underground, buried, concealed

Entry 2

underground, hidden, concealed, secret

Antonyms

surface-level, exposed, above-ground, surface, open

Entry 1

surface-level, exposed, above-ground

Entry 2

surface, open

Collocations

subterranean tunnel, subterranean chamber, subterranean passage