1

underground

adverb un·der·ground \ ˌən-dər-ˈgrau̇nd \
Updated on: 18 May 2018

Definition of underground

1 : beneath the surface of the earth
2 : in or into hiding or secret operation

Examples of underground in a Sentence

  1. They had been living underground as fugitives.

Recent Examples of underground from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'underground.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of underground

14th century

in the meaning defined at sense 1

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2

underground

noun \ ˈən-dər-ˌgrau̇nd \

Definition of underground

1 : a subterranean space or channel
2 : an underground city railway system
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

Recent Examples of underground from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'underground.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of underground

1594

in the meaning defined at sense 1

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underground Synonyms

Synonyms

resistance;

Related Words

cabal, conspiracy;


3

underground

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

Definition of underground

1 : being, growing, operating, or situated below the surface of the ground
2 : conducted by secret means
3 a : existing outside the establishment
  • an underground literary reputation
b : existing outside the purview of tax collectors or statisticians
  • the underground economy
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.

Recent Examples of underground from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'underground.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of underground

1601

in the meaning defined at sense 1

See Words from the same year
NEW! Time Traveler


UNDERGROUND Defined for English Language Learners

underground

Definition of underground for English Language Learners

  • : below the surface of the earth

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


underground

Definition of underground for English Language Learners

  • : 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


underground

Definition of underground for English Language Learners

  • : 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


UNDERGROUND Defined for Kids

1

underground

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

Definition of underground for Students

1 : below the surface of the earth
2 : in or into hiding or secret operation The rebels went underground.

2

underground

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

Definition of underground for Students

1 : subway
2 : a secret political movement or group

3

underground

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

Definition of underground for Students

1 : located under the surface of the ground
  • underground pipes
2 : done or happening secretly
  • an underground revolt


Seen and Heard

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