underground

phonetic symbol: / ʌ́ndɚɡràʊnd / 

underground - English Dictionary

[ noun ]
■ an electric railway operating below the surface of the ground (usually in a city)
e.g.)
・in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'
metro , subway , subway system , tube

[ noun ]
■ a secret group organized to overthrow a government or occupation force
resistance

[ adjective satellite ]
■ conducted with or marked by hidden aims or methods
e.g.)
・underground resistance
clandestine , cloak-and-dagger , hole-and-corner , hugger-mugger , hush-hush , secret , surreptitious , undercover

[ adjective satellite ]
■ under the level of the ground
e.g.)
・underground caverns
belowground

[ adverb ]
■ beneath the surface of the earth
e.g.)
・water flowing underground

[ adverb ]
■ in or into hiding or secret operation
e.g.)
・the organization was driven underground

Word list en

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