underground

Plural: undergrounds

Noun

• a secret group organized to overthrow a government or occupation force
• an electric railway operating below the surface of the ground (usually in a city)
  • "in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'"
• Regions beneath the surface of the earth, both natural (eg. caves) and man-made (eg. mines).
• Synonym of subway: a railway that is under the ground.
• A movement or organisation of people who resist political convention.
• A movement or organisation of people who resist artistic convention.

Adjective Satellite

• under the level of the ground
  • "underground caverns"
• conducted with or marked by hidden aims or methods
  • "underground resistance"

Adverb

• in or into hiding or secret operation
  • "the organization was driven underground"
• beneath the surface of the earth
  • "water flowing underground"

Adj

• Below the ground; below the surface of the Earth.
• Hidden, furtive, secretive.
• Outside the mainstream, especially unofficial and hidden from the authorities.

Adv

• Below the ground.
• Secretly.

Verb

• To route electricity distribution cables underground.

Examples

• London Underground
• the French underground during World War II
• The tunnel goes underground at this point.
• There is an underground tunnel that takes you across the river.
• These criminals operate through an underground network.
• underground music

Synonyms

belowground, clandestine, cloak-and-dagger, hole-and-corner, hugger-mugger, hush-hush, metro, resistance, secret, subway, subway system, surreptitious, tube, undercover, abstruse, alternative, avant-garde, behind the scenes, below ground, catlike, clandestinely, concealed, confidential, counterculture, covered, covert, dark, deep-laid, dern, disguised, furtive, hidden, huggermugger, hypogean, in secret, incognito, inconspicuous, invisible, latent, low profile, lurksome, lurky, mousy, obfuscated, obfuscatory, obscure, obscured, occluded, occulted, off-the-books, on the down-low, on the quiet, on the sly, private, recondite, secluded, secreted, secretive, silent, slinky, sly, sneaky, snug, stealthy, sub rosa, subterranean, tect, unapparent, unconventional, under the radar, under wraps, under-the-table, underground, underground railway, undisclosed, unperceived, veiled

Antonyms

mainstream

Related Words

go underground, underground railway

Anagrams of underground