underground
ˈʌn.də.ɡraʊnd
Definition Synonyms

Definition of underground - Reverso English Dictionary

Adjective

1.
below groundlocated below the earth's surface
  • The underground tunnel was dark and damp.
buried subsurface subterranean
2.
secrecyhidden or secretive in nature
  • They held underground meetings to avoid detection.
clandestine covert secretive
3.
culturerelated to non-mainstream culture or art
  • The band gained popularity in the underground music scene.
alternative nonconformist

Adverb

1.
beneath groundbelow the surface of the earth
  • The tunnel runs underground for miles.
belowground subterranean
2.
secretlyin a secretive or hidden manner
  • The activists went underground to avoid arrest.
clandestinely covertly secretively

Noun

1.
transportationUKrailway system under the ground in a cityUK
  • We took the underground to get across town.
metro subway tube
2.
secretive groupUKmovement or group acting secretly within a larger groupUK
  • The underground resistance fought against the oppressive regime..
3.
resistancemovement to overthrow a government or occupation
  • The underground worked to free the occupied city.
insurgency resistance
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Images of underground

  • underground: railway system under the ground in a city
    railway system under the ground in a city

Expressions with underground

💡 Discover popular phrases, idioms, collocations, or phrasal verbs. Click any expression to learn more, listen to its pronunciation, or save it to your favorites.
to begin operating secretly, especially to avoid detection
After the scandal, the organization decided to go underground..
railway system operating below the ground
The underground railway in London is very efficient.
insulated wire buried in the ground to carry power or signals
The workers installed an underground cable to supply electricity to the new houses.
parking area for vehicles built below the surface of the ground
The shopping mall offers free underground parking for all customers.
publications produced without official approval
The underground press circulated news banned by the government.
non-mainstream cultural or artistic movements
The city's underground activity includes many avant-garde art shows.

Origin of underground

Old English, under (beneath) + grund (ground)

Terms with underground included in their meaning

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natural formation
large underground chamber formed naturally
metro travel
underground railway system in a city
transport
train running on an underground railway
transportation
underground passage for vehicles or pedestrians
literal
valuable items hidden underground or underwater
transport route
underground passage for trains
natural source
water flowing naturally from an underground source
animals
small dog breed originally for hunting underground animals

Examples of underground in a sentence

  • They discovered an underground cave.
  • The underground network operated in secrecy.
  • They distributed underground pamphlets to spread their message.
  • He was fascinated by the underground art movement.
  • The underground film festival attracted a diverse crowd.
  • The roots of the tree spread underground.

View all translations of underground

Click below to see the appropriate translations facing each meaning.
  1. French:souterrain, sous terre, ...
  2. German:unterirdisch, im Untergrund, ...
  3. Italian:sotterraneo, sotto terra, ...
  4. Spanish:subterráneo, subterráneamente, ...
  5. Portuguese:subterrâneo, subterraneamente, ...
  6. Chinese:地下的, 在地下, ...
  7. Japanese:地下の, 地下で, ...
  8. Arabic:تَحْتَ الأَرْضِيّ, تَحْتَ الْأَرْض, ...
  9. Hebrew:תַּת־קַרְקַעִי, מִתַּחַת לָאֲדָמָה, ...
  10. Russian:подземный, под землёй, ...
  11. Ukrainian:підземний, під землею, ...
  12. Hindi:भूमिगत, धरती के नीचे, ...
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