Underground facility Synonyms

Definitions for Underground


  • (adjective) undertaken or done so as to escape being observed or known by others
  • (adjective) being, situated, or operating beneath the surface of the earth
  • (noun) a secret organization in a conquered country fighting against enemy forces

Definitions for Facility


  • (noun) a structure that is designed and built for a particular purpose
  • (noun) a building or place that provides a particular service or is used for a particular industry
  • (noun) something designed and created to serve a particular function and to afford a particular convenience or service