Underground mountain 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

UM abbreviation

UM is an abbreviation for Underground Mountain
What does UM stand for?
UM stands for "Underground Mountain"

Mountain replaced

Definitions for Mountain


  • (noun) an elevation of land higher than a hill
  • (noun) a considerable amount
  • (noun) a quantity of things thrown or stacked on one another