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We found 39 dictionaries with English definitions that include the word underground: Click on the first link on a line below to go directly to a page where "underground" is defined. General (29 matching dictionaries) underground: American Heritage Dictionary of the English Language [home, info] underground, the underground: Collins English Dictionary [home, info] underground: Vocabulary.com [home, info] underground, underground, the Underground: Macmillan Dictionary [home, info] underground: Merriam-Webster's Online Dictionary, 11th Edition [home, info] Underground, underground: Wordnik [home, info] underground, the underground: Cambridge Advanced Learner's Dictionary [home, info] Underground: Wiktionary [home, info] underground: Compact Oxford English Dictionary [home, info] underground: Webster's New World College Dictionary, 4th Ed. [home, info] underground: The Wordsmyth English Dictionary-Thesaurus [home, info] underground: Infoplease Dictionary [home, info] underground: Dictionary.com [home, info] underground (adv.): Online Etymology Dictionary [home, info] Underground, underground: UltraLingua English Dictionary [home, info] underground: Cambridge Dictionary of American English [home, info] The Underground (Animorphs), The Underground (Stoke), The Underground (Stoke concert venue), The Underground (TV series), The Underground (concert venue), The Underground (newspaper), The Underground, Underground (Analog Pussy album), Underground (Ben Folds Five song), Underground (Electric Prunes album), Underground (Jayo Felony album), Underground (Keaggy album), Underground (Phil Keaggy album), Underground (Stargate Atlantis), Underground (Thelonious Monk album), Underground (album), Underground (book), Underground (comics), Underground (culture), Underground (disambiguation), Underground (documentary film), Underground (film), Underground (movie), Underground (novel), Underground (play), Underground (role-playing game), Underground (role playing game), Underground (song), Underground (soundtrack), Underground (stoke), Underground (stories), Underground (the arts), Underground: Wikipedia, the Free Encyclopedia [home, info] Underground: Online Plain Text English Dictionary [home, info] underground: Webster's Revised Unabridged, 1913 Edition [home, info] underground: Rhymezone [home, info] underground: AllWords.com Multi-Lingual Dictionary [home, info] underground: Webster's 1828 Dictionary [home, info] underground: Free Dictionary [home, info] underground: Mnemonic Dictionary [home, info] underground: WordNet 1.7 Vocabulary Helper [home, info] underground: LookWAYup Translating Dictionary/Thesaurus [home, info] The Underground, underground: Dictionary/thesaurus [home, info] Business (3 matching dictionaries) Underground: Construction Term Glossary [home, info] The Underground, Underground (album), Underground (disambiguation), underground: Legal dictionary [home, info] underground: Financial dictionary [home, info] Computing (1 matching dictionary) The Underground, Underground (album), Underground (disambiguation), underground: Encyclopedia [home, info] Medicine (1 matching dictionary) underground: Medical dictionary [home, info] Miscellaneous (2 matching dictionaries) underground: Political [home, info] Underground: Brilliant Dream Dictionary [home, info] Slang (2 matching dictionaries) The Underground: A Seattle Lexicon [home, info] The UnderGround: Urban Dictionary [home, info] Tech (1 matching dictionary) underground: Rane Professional Audio Reference [home, info]

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (underground) ▸ noun:  a secret group organized to overthrow a government or occupation force ▸ noun:  electric underground railway ▸ adjective:  conducted with or marked by hidden aims or methods ("Underground resistance") ▸ adjective:  under the level of the ground ("Underground caverns") ▸ adjective:  used of independent armed resistance forces ▸ adverb:  beneath the surface of the earth ("Water flowing underground") ▸ adverb:  in or into hiding or secret operation ("The organization was driven underground") ▸ Word origin