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1

underground

play
adverb un·der·ground \ˌən-dər-ˈgrau̇nd\

Simple Definition of underground

  • : below the surface of the earth

  • : in or into a place that is hidden or secret : out of the view of the public

Source: Merriam-Webster's Learner's Dictionary

Full Definition of underground

  1. 1 :  beneath the surface of the earth

  2. 2 :  in or into hiding or secret operation


2

underground

play
noun un·der·ground \ˈən-dər-ˌgrau̇nd\

Simple Definition of underground

  • : a system of trains that run below the ground in a large city

  • the underground : a group of people who secretly work to oppose or overthrow a government

Source: Merriam-Webster's Learner's Dictionary

Full Definition of underground

  1. 1 :  a subterranean space or channel

  2. 2 :  an underground city railway system

  3. 3 a :  a movement or group organized in strict secrecy among citizens especially in an occupied country for maintaining communications, popular solidarity, and concerted resistive action pending liberation b :  a clandestine conspiratorial organization set up for revolutionary or other disruptive purposes especially against a civil order c :  an unofficial, unsanctioned, or illegal but informal movement or group; especially :  a usually avant-garde group or movement that functions outside the establishment

Examples of underground in a sentence

  1. I've ridden on the New York subway, the Paris Metro, and the London Underground.

  2. <joined the underground while still a teenager>



1594

First Known Use of underground

1594


3

underground

play
adjective un·der·ground \ˈən-dər-ˌgrau̇nd\

Simple Definition of underground

  • : located or occurring below the surface of the earth

  • : secret and usually illegal

  • : of, relating to, or produced in a social and artistic world that is different and separate from the main part of society

Source: Merriam-Webster's Learner's Dictionary

Full Definition of underground

  1. 1 :  being, growing, operating, or situated below the surface of the ground

  2. 2 :  conducted by secret means

  3. 3 a :  existing outside the establishment <an underground literary reputation> b :  existing outside the purview of tax collectors or statisticians <the underground economy>

  4. 4 a :  produced or published outside the establishment especially by the avant-garde <underground movies> <underground newspapers> b :  of or relating to the avant-garde underground <an underground moviemaker> <an underground theater>

Examples of underground in a sentence

  1. The drugs are supplied through an underground network.

  2. She loves the city's underground music scene.



1601

First Known Use of underground

1601



UNDERGROUND Defined for Kids

1

underground

play
adverb un·der·ground \ˌən-dər-ˈgrau̇nd\

Definition of underground for Students

  1. 1 :  below the surface of the earth

  2. 2 :  in or into hiding or secret operation <The rebels went underground.>




2

underground

play
noun un·der·ground \ˈən-dər-ˌgrau̇nd\

Definition of underground for Students

  1. 1 :  subway

  2. 2 :  a secret political movement or group




3

underground

play
adjective un·der·ground \ˈən-dər-ˌgrau̇nd\

Definition of underground for Students

  1. 1 :  located under the surface of the ground <underground pipes>

  2. 2 :  done or happening secretly <an underground revolt>





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