- underground
-
1. beneath the surface of the ground: traveling underground by subway.2. in concealment or secrecy; not openly: subversion carried on underground.adj.3. existing, situated, operating, or taking place beneath the surface of the ground.4. used, or for use, underground.5. hidden or secret; not open: underground political activities.6. published or produced by political or social radicals or nonconformists: an underground newspaper.7. avant-garde; experimental: an underground movie.8. critical of or attacking the established society or system: underground opinion.9. of or for nonconformists; unusual: an underground vegetarian restaurant.n.10. the place or region beneath the surface of the ground.11. an underground space or passage.12. a secret organization fighting the established government or occupation forces: He fought in the French underground during the Nazi occupation of France.13. (often cap.) a movement or group existing outside the establishment and usually reflecting unorthodox, avant-garde, or radical views.14. Chiefly Brit. a subway system.v.t.15. to place beneath the surface of the ground: to underground utility lines.[1565-75; UNDER- + GROUND1]
* * *
Universalium. 2010.