Definition Synonyms
Definition of underground - Reverso English Dictionary
Adjective
1.
below groundlocated below the earth's surface
- The underground tunnel was dark and damp.
2.
secrecyhidden or secretive in nature
- They held underground meetings to avoid detection.
3.
culturerelated to non-mainstream culture or art
- The band gained popularity in the underground music scene.
Adverb
1.
beneath groundbelow the surface of the earth
- The tunnel runs underground for miles.
2.
secretlyin a secretive or hidden manner
- The activists went underground to avoid arrest.
Noun
1.
transportationUK railway system under the ground in a cityUK
- We took the underground to get across town.
2.
secretive groupUK movement 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.
Images of underground

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.
cultural trend developing outside mainstream awareness
The underground movement in music gained popularity in the 90s.
railway route of a metro system running mainly through tunnels below ground
We took the underground line to reach the city center quickly.
natural stream of water flowing mainly or entirely below ground
The explorers mapped an underground river running through the limestone cave system.
economic activities not reported to the government
The underground economy includes unreported income from self-employment.
method of extracting valuable material from below the earth's surface
Underground mining is used when mineral deposits lie deep beneath the ground.
network of tunnels and chambers dug below ground in a mine
Engineers inspected the underground workings for signs of collapse.
Origin of underground
Old English, under (beneath) + grund (ground)
Terms with underground included in their meaning
💡 A powerful way to uncover related words, idioms, and expressions linked by the same idea — and explore meaning beyond exact word matches.
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
source
water drawn from an underground well
job
person who digs wells to find water underground
storage room
underground room for storing wine at constant temperature
infrastructure
covered opening in a street for access to sewers or underground utilities
transportation
underground passage built for cars and other road vehicles
transportation
travel by the underground railway system
underground location
located under the surface of the earth
safety
hide and stay protected inside an underground shelter
wine collection
collection of wines stored underground
storage
store wine and other goods in a cool underground space for aging
energy source
gas mainly methane from underground used for energy
cooking
underground stem of ginger plant used in cooking
cooking
edible plant part growing underground
urban transport
train operating in an underground urban railway
food
type of edible underground fungus
vegetable
edible underground bulb from an aquatic plant
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.
The treasure was buried underground centuries ago. The documents were distributed underground. They met underground to plan the event. The underground was crowded during rush hour. London's underground is famous worldwide. The underground planned a secret meeting. She joined the underground to fight for freedom. Many joined the underground to resist the invaders.
View all translations of underground
Click below to see the appropriate translations facing each meaning.
- French:souterrain, sous terre, ...
- German:unterirdisch, im Untergrund, ...
- Italian:sotterraneo, sotto terra, ...
- Spanish:subterráneo, subterráneamente, ...
- Portuguese:subterrâneo, subterraneamente, ...
- Chinese:地下的, 在地下, ...
- Japanese:地下の, 地下で, ...
- Arabic:تَحْتَ الأَرْضِيّ, تَحْتَ الْأَرْض, ...
- Hebrew:תַּת־קַרְקַעִי, מִתַּחַת לָאֲדָמָה, ...
- Russian:подземный, под землёй, ...
- Ukrainian:підземний, під землею, ...
- Hindi:भूमिगत, धरती के नीचे, ...
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