phonetic symbol: / ʌ́ndɚɡràʊnd / 

underground - English Dictionary

[ noun ]
■ 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'
metro , subway , subway system , tube

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

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

[ adjective satellite ]
■ under the level of the ground
・underground caverns

[ adverb ]
■ beneath the surface of the earth
・water flowing underground

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

Word list en

※ You can download Most Useful English Words 15000 for free after posting your review!

To download this contents, you need to post your reviews for items about English learning.
You can download it for free after posting your reviews.

Post a review about English learning items

Images associated with 'underground'
※ Click Bingo of images associated with this word!
※ They sometimes include non-related images.