Impenetrable fortification Synonyms

Definitions for Impenetrable


  • (adjective) impossible to get through or into
  • (adjective) being beyond one's powers to know, understand, or explain
  • (adjective) impossible to understand

Definitions for Fortification


  • (noun) a structure or place from which one can resist attack
  • (noun) defensive structure consisting of walls or mounds built around a stronghold to strengthen it
  • (noun) the art or science of strengthening defenses