Underground series 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

US abbreviation

US is an abbreviation for Underground Series
What does US stand for?
US stands for "Underground Series"

Series replaced

Definitions for Series


  • (noun) similar things placed in order or happening one after another
  • (noun) a group of postage stamps having a common theme or a group of coins or currency selected as a group for study or collection
  • (noun) (mathematics) the sum of a finite or infinite sequence of expressions