Thesaurus

underground

adjective

Synonyms and Antonyms of underground

  1. 1 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 backstairs, behind-the-scenes, clandestine, covert, furtive, hole-and-corner, hugger-mugger, hush-hush, private, privy, sneak, sneaking, sneaky, stealth, stealthy, surreptitious, undercover, secret, underhand, underhandedRelated Words back-channel, closed-door, off-the-books, off-the-record; classified, confidential, restricted, top secret, undisclosed; concealed, hidden, secreted, subterranean, unadvertised, unexposedNear Antonyms acknowledged, avowed; aboveboard, straightforward, unconcealed, undisguised; unclassified, unrestricted; clear, evident, manifest, obvious, patent, plainAntonyms open, overt, public

  2. 2 being, situated, or operating beneath the surface of the earth an underground shopping mall that is part of the city's subway system Synonyms subsurface, subterranean, belowgroundAntonyms aboveground, surface


underground

noun

Synonyms and Antonyms of underground

  1. a secret organization in a conquered country fighting against enemy forces joined the underground while still a teenager Synonyms resistanceRelated Words cabal, conspiracy



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