1
as in clandestine
undertaken or done so as to escape being observed or known by others
an underground operation to smuggle ancient artifacts out of the country
Synonyms & Similar Words
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Antonyms & Near Antonyms
2
as in subterranean
being, situated, or operating beneath the surface of the earth
an underground shopping mall that is part of the city's subway system
Synonyms & Similar Words
Antonyms & Near Antonyms
as in resistance
a secret organization in a conquered country fighting against enemy forces
joined the underground while still a teenager
Synonyms & Similar Words
as in undercover
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of underground
Dan Walters, The Mercury News, 28 Feb. 2025
To be fair, this bygone era of Chicago, like Atlanta trap before it, is now so ingrained in the DNA of both popular and underground rap that pretty much everyone is influenced by bits of the sound in one way or another.
—Alphonse Pierre, Pitchfork, 28 Feb. 2025
Gege Reed, The Courier-Journal, 25 Nov. 2024
Hailing from Sacramento, X-Raided emerged as a leading figure in the early nineties underground rap scene.
—Gordon G. Chang, Newsweek, 31 Oct. 2024
Yumi Asada, Chris Lau and Minori Konishi, CNN, 31 Jan. 2025
Both events have historically booked indie, underground and left of center electronic music, with that vibe expected to continue in 2025.
—Katie Bain, Billboard, 30 Jan. 2025
See All Example Sentences for underground
Adjective
One major failing has been a slow response to an obvious need for more water storage — either in reservoirs or underground aquifers — to capture winter rains and spring snowmelts as a buffer for dry years.
—Dan Walters, The Mercury News, 28 Feb. 2025
To be fair, this bygone era of Chicago, like Atlanta trap before it, is now so ingrained in the DNA of both popular and underground rap that pretty much everyone is influenced by bits of the sound in one way or another.
—Alphonse Pierre, Pitchfork, 28 Feb. 2025
Noun
Here's your complete guide to the 2024 underground experience This 1840s home looks like a white Christmas wonderland.
—Gege Reed, The Courier-Journal, 25 Nov. 2024
Hailing from Sacramento, X-Raided emerged as a leading figure in the early nineties underground rap scene.
—Gordon G. Chang, Newsweek, 31 Oct. 2024
Adverb
Rescuers have used cranes to lift part of the truck out of the hole and have sent drones underground but have not been able to communicate with the truck driver since Tuesday.
—Yumi Asada, Chris Lau and Minori Konishi, CNN, 31 Jan. 2025
Both events have historically booked indie, underground and left of center electronic music, with that vibe expected to continue in 2025.
—Katie Bain, Billboard, 30 Jan. 2025
See All Example Sentences for underground
Recent Examples of Synonyms for underground
Adjective
-
Information in federal systems includes Treasury payments that could be used to figure out the details of intelligence programs or health and personnel records that could reveal the identities of agents or the responsibilities of clandestine officers.—
DAVID KLEPPER THE ASSOCIATED PRESS,
arkansasonline.com,
28 Feb. 2025
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The criminal charges also allege Navarro and Worden ensured that no invoice related to the clandestine construction surpassed $3,000, a threshold that would have required further authorization from Caltrain and TransAmerica Services Inc., the company that employed Worden.—
Robert Salonga,
The Mercury News,
28 Feb. 2025
Adjective
-
North Milford Valley, in western Utah, is home to dormant volcanoes, subterranean lava deposits, and smatterings of obsidian—black volcanic glass—that Paiute peoples once collected for arrowheads and jewelry.—
Brent Crane,
The New Yorker,
2 Mar. 2025
-
For over 5 million years, this subterranean time capsule remained completely cut off from the rest of the world, hidden beneath a thick slab of limestone and clay.—
Scott Travers,
Forbes,
2 Mar. 2025
Noun
-
Lift some weights The most effective resistance exercises for building lean muscle and losing fat are those that require multiple joints in the body to work together, according to the nonprofit American Council on Exercise.—
Sandee LaMotte,
CNN,
25 Feb. 2025
-
The material is lightweight and airy for warm spring days, with a bit of stretch and wrinkle resistance.—
Olivia Young,
Travel + Leisure,
25 Feb. 2025
Adjective
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Based on an incident that had happened 10 years earlier, the book chronicles the harrowing story of two undercover LAPD patrol officers who are kidnapped during a routine traffic stop that goes horribly wrong.—
Chris Koseluk,
The Hollywood Reporter,
28 Feb. 2025
-
Russo turned stool pigeon within a month of his November 2017 arrest for selling a kilo of cocaine to an undercover agent.—
John Annese,
New York Daily News,
26 Feb. 2025
Adjective
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Ralph Fiennes, Stanley Tucci, John Lithgow, Sergio Castellitto and Isabella Rossellini star in Conclave in which Cardinal Thomas Lawrence (Fiennes) is tasked with running this covert process after the unexpected death of the beloved Pope.—
Denise Petski,
Deadline,
2 Mar. 2025
-
In covert gatherings across California, raw goat or cow milk is mixed with cane alcohol and sugars to make pajaretes.—
Ryan Fonseca,
Los Angeles Times,
26 Feb. 2025
Adjective
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This private survey reading on Monday followed the official manufacturing PMI released on Saturday, which also showed that China’s February factory activity expanded at its fastest pace since November.—
Anniek Bao,
CNBC,
3 Mar. 2025
-
An American company became the first private firm to perform a perfect moon landing early Sunday when Firefly Aerospace sent its Blue Ghost lander down to the surface.—
Richard Tribou,
Orlando Sentinel,
2 Mar. 2025
Cite this Entry
“Underground.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underground. Accessed 9 Mar. 2025.
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