subterranean

adjective

sub·​ter·​ra·​nean ˌsəb-tə-ˈrā-nē-ən How to pronounce subterranean (audio)
-nyən
variants or less commonly subterraneous
1
: being, lying, or operating under the surface of the earth
2
: existing or working in secret : hidden
a subterranean network of criminals
subterraneanly adverb
or less commonly subterraneously

Did you know?

Go Underground With Subterranean

A tunnel is a subterranean road or pathway, and a subway is a subterranean railway. The subterranean vaults at Fort Knox hold billions of dollars of gold reserves. Subterranean reservoirs called aquifers are tapped for water; in places where the pressure on the subterranean water is great enough, a hole drilled in the ground will bring it bubbling to the surface.

Examples of subterranean in a Sentence

a subterranean bunker that supposedly could withstand even an atomic blast
Recent Examples on the Web But at its best, The Substance is also about something much more subterranean, that string of just-past-midlife goodbyes that are really hard to make. Stephanie Zacharek, TIME, 21 May 2024 While the state-of-the-art Freedom Center was a breath of fresh air compared with the dank subterranean printing operation at Tribune Tower, the tenure at the stand-alone River West plant was not without labor strife. Robert Channick, Chicago Tribune, 19 May 2024 See all Example Sentences for subterranean 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'subterranean.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Latin subterraneus, from sub- + terra earth — more at thirst

First Known Use

1603, in the meaning defined at sense 1

Time Traveler
The first known use of subterranean was in 1603

Dictionary Entries Near subterranean

Cite this Entry

“Subterranean.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/subterranean. Accessed 28 May. 2024.

Kids Definition

subterranean

adjective
sub·​ter·​ra·​nean ˌsəb-tə-ˈrā-nē-ən How to pronounce subterranean (audio)
-nyən
1
: being, lying, or operating under the surface of the earth
2
: existing or working in secret : hidden

More from Merriam-Webster on subterranean

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!