IMPREGNABLE as ADJECTIVE

1. Meaning
   • impossible to take by storm
   
   Synonym(s)
   • inexpugnable (what does inexpugnable mean?)
   
   Similar To
   • unconquerable (what does unconquerable mean?)
2. Meaning
   • able to withstand attack
   
   Synonym(s)
   • inviolable (what does inviolable mean?)
   • secure (what does secure mean?)
   • strong (what does strong mean?)
   • unassailable (what does unassailable mean?)
   • unattackable (what does unattackable mean?)
   
   Usage Example(s)
   • an impregnable fortress
   • fortifications that made the frontier inviolable
   
   Similar To
   • invulnerable (what does invulnerable mean?)