SUBSURFACE Synonyms: 5 Similar and Opposite Words

subsurface

adjective

ˌsəb-ˈsər-fəs

Definition of subsurface

as in underground

being, situated, or operating beneath the surface of the earth a sandy wasteland that gave little hint of its subsurface wealth

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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 subsurface Evaluation protocols of subsurface measurements and training of all rig site personnel have improved the drilling economics of this geothermal project. — Ian Palmer, Forbes, 19 May 2022 Shallow pools of subsurface water froze and fractured the surface again and again. — Joshua Hawkins, BGR, 22 Apr. 2022 This is an important scientific mission tasked with searching for ice at the south pole and using a one-meter drill to prospect for subsurface samples. — Eric Berger, Ars Technica, 20 Apr. 2022 So Marco Mastrogiuseppe, a researcher on the Cassini team who had used instruments like RADAR to map subsurface water on Mars, decided to try something. — Liz Kruesi, Discover Magazine, 28 Oct. 2015 See All Example Sentences for subsurface

Recent Examples of Synonyms for subsurface

Adjective

Poland also has over 86,000 places of refuge offering a lower level of protection such as basements, underground garages or subway stations, and catering for around 23 million people.

— Arkansas Online, Arkansas Online, 3 Oct. 2026
In 2011, Joe Kay debuted Soulection as a college radio show at Cal State Long Beach, spinning rare B-sides, progressive beats, inventive flips of classic records and soulful underground tracks.

— Kailyn Brown, Los Angeles Times, 3 Oct. 2026

Definition of underground

Adjective

Today, scientists believe these subterranean formations could offer a reliable solution to the clean energy transition’s biggest storage challenge.

— Mrigakshi Dixit, Interesting Engineering, 29 Sep. 2026
Make sure to check the hotel’s calendar of events for poetry readings and artist talks, which are often held in the subterranean B Bar speakeasy off the lobby bar.

— Condé Nast, Condé Nast Traveler, 29 Sep. 2026

Definition of subterranean

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subsuming

subsurface

subteen

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“Subsurface.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/subsurface. Accessed 9 Oct. 2026.

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Synonyms of subsurface

adjective

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