Underground Railway
— Noun
– English
～ secret aid to escaping slaves that was provided by abolitionists in the years before the American Civil War
underground
— Noun
– English
～ 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'"
underground press
— Noun
– English
～ a system of clandestine printing and distribution of dissident or banned literature
underground
— Noun
– English
～ a secret group organized to overthrow a government or occupation force
Underground Railroad
— Noun
– English
～ secret aid to escaping slaves that was provided by abolitionists in the years before the American Civil War
underground
— Adverb
– English
～ beneath the surface of the earth; "water flowing underground"
underground
— Adverb
– English
～ in or into hiding or secret operation; "the organization was driven underground"
underground
— Adjective
– English
～ under the level of the ground; "belowground storage areas"; "underground caverns"
underground
— Adjective
– English
～ conducted with or marked by hidden aims or methods; "clandestine intelligence operations"; "cloak-and-dagger activities behind enemy lines"; "hole-and-corner intrigue"; "secret missions"; "a secret agent"; "secret sales of arms"; "surreptitious mobilization of troops"; "an undercover investigation"; "underground resistance"
undergrow
— Verb
– English
～ grow below something; "The moss undergrew the stone patio"
undergrowth
— Noun
– English
～ the brush (small trees and bushes and ferns etc.) growing beneath taller trees in a wood or forest
underhand
— Adverb
– English
～ with the hand swung below shoulder level; "throwing a ball underarm"
underhand
— Adverb
– English
～ slyly and secretly; "Mean revenge, committed underhand"- John Donne; "oldline aristocratic diplomats underhandedly undermined the attempt...to align Germany with the Western democracies"- C.G.Bowers
underhand
— Adjective
– English
～ with hand brought forward and up from below shoulder level; "an underhand pitch"; "an underhand stroke"
underhand
— Adjective
– English
～ marked by deception; "achieved success in business only by underhand methods"
underhanded
— Adjective
– English
～ with hand brought forward and up from below shoulder level; "an underhand pitch"; "an underhand stroke"
underhanded
— Adjective
– English
～ marked by deception; "achieved success in business only by underhand methods"
underhandedly
— Adverb
– English
～ slyly and secretly; "Mean revenge, committed underhand"- John Donne; "oldline aristocratic diplomats underhandedly undermined the attempt...to align Germany with the Western democracies"- C.G.Bowers
underhung
— Adjective
– English
～ supported from below especially resting on a track instead of suspended from above; "underhung sliding doors"
underhung
— Adjective
– English
～ having a lower part projecting beyond the upper; "an underhung jaw"; "undershot bulldog"