Underground installation Synonyms

Underground replaced

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

Synonyms for phrase

UI abbreviation

UI is an abbreviation for Underground Installation
What does UI stand for?
UI stands for "Underground Installation"

Installation replaced

Definitions for Installation


  • (noun) the process or an instance of being formally placed in an office or organization
  • (noun) a structure that is designed and built for a particular purpose
  • (noun) the act of installing something (as equipment )