Synonyms of underground
75 similar words · 1 opposite word
Another word for underground is subway. Other synonyms of underground are resistance.
Synonyms and similar words for underground
adjectiveBelow the ground; below the surface of the Earth.
- subterraneanBelow ground, under the earth, underground.
- hypogeanExisting or growing underground.
- belowgroundBeneath the surface of the ground; underground.
adjectiveHidden, furtive, secretive.
- covered
- concealedHidden.
- darkMarked by or conducted with secrecy.
- dernHidden; secret; private.
- hidden
- invisible
- latent
- nondisplayedNot displayed; hidden, invisible.
- obfuscated
- obfuscatoryTending to obfuscate; intended to conceal the truth by confusion.
- obscureHidden, out of sight or inconspicuous.
- obscuredMade hidden, less visible, or dark.
- occluded
- occulted
- private
- secludedHidden, isolated, remote.
- secret
- secreted
- silent
- snugClose; concealed; not exposed to notice.
- unapparentNot apparent; not seen on the surface.
- undisclosed
- veiled
- abstruseConcealed or hidden; secret.
- behind the scenes
- catlike
- backroom
- backstairs
- stealth slang
- clandestineDone or kept in secret, sometimes to conceal an illicit or improper purpose.
- cloak-and-daggerMarked by menacing furtive secrecy, often with a melodramatic tint or espionage involved.
- confidential
- covert
- deep-laidSecret and carefully planned.
- disguised
- furtiveOf a thing: done with evasive or guilty secrecy.
- huggermugger
- hush-hushSecret, not spoken of (or spoken of only in hushed whispers between insiders).
- inconspicuous
- incognitoWithout being known; in an assumed character, or under an assumed title; in disguise.
- low profileAn intentionally furtive position as to not arouse suspicion or catch attention.
- lurksomeCharacterised or marked by lurking; lurky.
- lurkyTending to lurk; given to or indicative of lurking.
- mousy
- off-the-books
- on the down-low
- on the slySlyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily.
- secretive
- slinky
- sly
- sneaky
- stealthyCharacterized by or resembling stealth or secrecy.
- sub rosaCarried out confidentially or secretly.
- surreptitiousStealthy, furtive, well hidden, covert (especially movements).
- under-the-table
- under the radarWithout attracting notice; in an undetected or secretive manner.
- under wraps
- undercover
- unperceivedNot perceived.
- inward obsoleteSecret, private, kept hidden.
- recondite obsolete
- tect obsolete, rareCovered; hidden.
adjectiveOf or relating to an art forms (such as music) or subculture that is outside the mainstream...
- alternativeNot traditional, outside the mainstream, underground.
- unconventional
adverbSecretly.
- clandestinely
- in secretSecretly; confidentially; in private.
- on the quietSurreptitiously.
nounSynonym of subway: a railway that is under the ground.
- underground railwaySynonym of subway: a railway under the ground.
- subwayAn underground railway, especially for mass transit of people in urban areas.
nounA movement or organization of people who resist political convention.
- resistanceAn underground organisation engaged in a struggle for liberation from forceful occupation; a resistance movement.
nounA movement or organization of people who resist artistic convention.
- avant-garde
- countercultureAny culture whose values and lifestyles are opposed to those of the established mainstream culture, especially to...
Opposite of underground
adjectiveOf or relating to an art forms (such as music) or subculture that is outside the mainstream...
- mainstreamUsed or accepted broadly rather than by small portions of population, market, scientific community, etc.
Meaning of underground
- adjective Below the ground; below the surface of the Earth.
- adjective Hidden, furtive, secretive.
- adjective Of or relating to an art forms (such as music) or subculture that is outside the mainstream, especially one that is unofficial and hidden from the authorities.
underground in other languages
Questions about synonyms of underground
- What is another word for underground?
- Underground has 75 synonyms on Word.ws, such as subway and resistance.
- What is the opposite of underground?
- The opposite of underground is mainstream.
- What does underground mean?
- Underground means below the ground; below the surface of the Earth.
Source and license
Adapted from Wiktionary: underground (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.
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Cite this page: “Synonyms of underground.” Word.ws, https://word.ws/synonyms/underground. Based on Wiktionary, CC BY-SA 4.0.