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
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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
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Antonyms & Near Antonyms
Examples Sentences
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Recent Examples of underground
Tia Goldenberg, Los Angeles Times, 9 Dec. 2024
Hezbollah itself boasted of its arms and tunnels large enough to house fighters and arms, even publishing a video of such an underground arms and military facility.
—Tovah Lazaroff, NBC News, 5 Dec. 2024
San Diego Union-Tribune, 30 May 2024
Paul Morrissey, a fixture of New York’s cinema scene whose collaborations with Andy Warhol in the ’60s and ’70s reinvented the American underground and made local legends of amateur actors and transgender performers, died Monday at a hospital in Manhattan.
—J. Kim Murphy, Variety, 28 Oct. 2024
William Mullane, USA TODAY, 29 Nov. 2024
During the Cold War, Stalin, facing a champagne ban, ordered the establishment of a high-end facility there, in a former gypsum mine more than two hundred feet underground.
—Boris Fishman, The New Yorker, 25 Nov. 2024
See all Example Sentences for underground 
Adjective
The judges ordered the trial to resume Tuesday, moving the proceedings to an underground chamber in a Tel Aviv court as a security precaution.
—Tia Goldenberg, Los Angeles Times, 9 Dec. 2024
Hezbollah itself boasted of its arms and tunnels large enough to house fighters and arms, even publishing a video of such an underground arms and military facility.
—Tovah Lazaroff, NBC News, 5 Dec. 2024
Noun
Millions of tourists a year flock to the region, affecting the entire underground as the industry guzzles water and sewage seeps through the earth and into the caves, killing fish and other wildlife.
—San Diego Union-Tribune, 30 May 2024
Paul Morrissey, a fixture of New York’s cinema scene whose collaborations with Andy Warhol in the ’60s and ’70s reinvented the American underground and made local legends of amateur actors and transgender performers, died Monday at a hospital in Manhattan.
—J. Kim Murphy, Variety, 28 Oct. 2024
Adverb
Large search coils can detect objects buried deeper underground but may not pick up smaller items.
—William Mullane, USA TODAY, 29 Nov. 2024
During the Cold War, Stalin, facing a champagne ban, ordered the establishment of a high-end facility there, in a former gypsum mine more than two hundred feet underground.
—Boris Fishman, The New Yorker, 25 Nov. 2024
See all Example Sentences for underground
Recent Examples of Synonyms for underground
Adjective
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Through clandestine operations and cyberattacks, the country sabotaged key Iranian nuclear facilities.Suzanne Maloney, Foreign Affairs, 10 Dec. 2024
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She's Helen, an agent passing on tips from high up in the Prime Minister's office to a clandestine agency (her loving husband happens to be Britain's defense minister).Tom Gliatto, People.com, 10 Dec. 2024
Adjective
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Today, visitors can explore the original mid century structures as well as several others, including a unique subterranean painting gallery.Nicole Kliest, Vogue, 13 Dec. 2024
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But transit sources told the Daily News an investigation into the cause of the explosion was ongoing – and that the subterranean substation remains out of commission for the foreseeable future.Evan Simko-Bednarski, New York Daily News, 12 Dec. 2024
Noun
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And that's because Ukraine, backed by our American allies, has put up a wall of resistance against the invading Russian forces, inflicting massive damage on the Russian forces.Hannah Parry, Newsweek, 9 Dec. 2024
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But in the year since, Iran's axis of resistance has suffered a series of catastrophic blows.Barak Ravid, Axios, 9 Dec. 2024
Adjective
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The canard that the Jan. 6 riot was actually an FBI setup and was driven on by undercover agents has been circulating since the days after the attack.Will Carless, USA TODAY, 14 Dec. 2024
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More than a decade later, the disgraced politician was found guilty of soliciting hundreds of thousands of dollars in bribes from undercover feds and stealing money meant to help senior citizens.John Annese, New York Daily News, 12 Dec. 2024
Adjective
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But all of that changed starting in 2017, when Mr. Trump became president amid the F.B.I. investigation into Russia’s covert attempt to manipulate the 2016 election and the nature of the ties between his campaign and Moscow.Charlie Savage, New York Times, 15 Dec. 2024
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The indictment shows that the FBI unraveled some of the covert schemes and identified specific perpetrators.Michael Kan, PCMAG, 12 Dec. 2024
Adjective
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The Humphreys family sold a 25% stake in the business to the Carlyle Group, a $447 billion (assets under management) private equity firm, for an undisclosed sum in 2019.Jemima McEvoy, Forbes, 14 Dec. 2024
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African American freshmen enrollment has notably decreased by 16.9% at highly selective public and private nonprofit four-year schools.Janae Bowens, Baltimore Sun, 14 Dec. 2024
Thesaurus Entries Near underground
Cite this Entry
“Underground.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/underground. Accessed 21 Dec. 2024.
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