impregnability
Cannot be breached
Impregnability is the quality of being impossible to capture, penetrate, or overcome.
A fortress has impregnability when no attack can breach it.
The term extends to arguments, positions, or defenses that seem unassailable: The impregnability of her logic left no room for counterargument.
They questioned the impregnability of the champion's record.
Impossible to attack successfully
- impenetrableImpossible to pass through
- imperviousUnable to be affected
- indestructibleImpossible to damage permanently
- invulnerableImmune to all harm
unbreakable · unconquerable · insurmountable · unyielding · adamantine · inviolable · untouchable · ironclad
Fortified urban stronghold
- strongholdFortified place of defense
- bastionFortified defensive position
- fortressHeavily defended military structure
- rampartFortified defensive wall
bulwark · battlement · redoubt · bunker · garrison · moat · palisade · stockade
Sustained effort capacity
- steadfastnessFirm loyal dedication
- fortitudeEnduring courage under pain
- tenacityPersistent grip or resolve
- robustnessResistance to failure
sturdiness · durability · strength · hardiness · toughness · solidity · permanence · stability
Precaution against harm
- encryptionConverting data into code
- firewallNetwork access control system
- vaultSecure storage chamber
- barrierObstruction preventing passage
lockdown · biometrics · surveillance · authentication · protection · defense system · access control · cybersecurity
unassailable
Impossible to attack successfully
- impenetrableImpossible to pass through
- imperviousUnable to be affected
- indestructibleImpossible to damage permanently
invulnerable · unbreakable · unconquerable · insurmountable · unyielding · adamantine · inviolable · untouchable · ironclad · watertight
citadel
Fortified urban stronghold
- strongholdFortified place of defense
- bastionFortified defensive position
- fortressHeavily defended military structure
rampart · bulwark · battlement · redoubt · bunker · garrison · moat · palisade · stockade · barbican
endurance
Sustained effort capacity
- steadfastnessFirm loyal dedication
- fortitudeEnduring courage under pain
- tenacityPersistent grip or resolve
robustness · sturdiness · durability · strength · hardiness · toughness · solidity · permanence · stability · reliability
safeguard
Precaution against harm
- encryptionConverting data into code
- firewallNetwork access control system
- vaultSecure storage chamber
barrier · lockdown · biometrics · surveillance · authentication · protection · defense system · access control · cybersecurity · secure perimeter
impregnabilityvulnerability
Openness to harm
weakness · penetrability · defenselessness · fragility · flimsiness
impregnabilityvulnerability
Openness to harm
insecurity · defencelessness · precariousness · exposure · unsafeness
pregnant, pregnancy, impregnable, impregnate, impregnation, impregnated, nonpregnant, impregnating, impregnates