Underground
WordNet
adjective
(1) Conducted with or marked by hidden aims or methods
"Clandestine intelligence operations"
"Cloak-and-dagger activities behind enemy lines"
"Hole-and-corner intrigue"
"Secret missions"
"A secret agent"
"Secret sales of arms"
"Surreptitious mobilization of troops"
"An undercover investigation"
"Underground resistance"
(2) Under the level of the ground
"Belowground storage areas"
"Underground caverns"
adverb
(3) Beneath the surface of the earth
"Water flowing underground"
(4) In or into hiding or secret operation
"The organization was driven underground"
noun
(5) 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'"
(6) A secret group organized to overthrow a government or occupation force
WiktionaryText
Adjective
- Below the ground; below the surface of the Earth.
- There is an underground tunnel that takes you across the river.
- Hidden, furtive, secretive.
- These criminals operate through an underground network.
- Of music, art, etc, outside the mainstream.
Synonyms
subterranean clandestine, hidden, hush-hush, secret avant-garde, unconventional
Adverb
- Below the ground.
- The tunnel goes underground at this point.
- Secretly.
Noun
- An underground railway.
- (with the) A movement or organisation of people who resist political convention.
- (with the) A movement or organisation of people who resist artistic convention.
Synonyms
metro, métro (the underground railway of Paris), subway (US), Tube (British - the underground railway of London) resistance avant-garde, counter-culture
Adjective
underground
- underground (outside the mainstream)
Noun
l'underground m
- the underground (people who resist artistic convention)
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