underfelt
— Noun
– English
~ a carpet pad of thick felt
underfoot
— Adverb
– English
~ in the way and hindering progress; "a house with children and pets and toys always underfoot"
underfoot
— Adverb
– English
~ under the feet; "trampled the beans underfoot"; "green grass growing underfoot"
underframe
— Noun
– English
~ the internal supporting structure that gives an artifact its shape; "the building has a steel skeleton"
underfur
— Noun
– English
~ thick soft fur lying beneath the longer and coarser guard hair
undergarment
— Noun
– English
~ a garment worn under other garments
undergird
— Verb
– English
~ make secure underneath; "undergird the ship"
undergird
— Verb
– English
~ lend moral support to
undergo
— Verb
– English
~ pass through; "The chemical undergoes a sudden change"; "The fluid undergoes shear"; "undergo a strange sensation"
undergrad
— Noun
– English
~ a university student who has not yet received a first degree
undergraduate
— Noun
– English
~ a university student who has not yet received a first degree
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"