adjective not able to be conquered or overcome; invincible
The fortress was built to be impregnable, with thick walls and a moat to deter enemy attacks.
The encryption software used by the company is designed to be impregnable, protecting sensitive data from hackers.
The team's defense was described as impregnable, as they did not allow any goals to be scored against them.
The security system in place is considered impregnable, ensuring that no unauthorized access is possible.
In a novel, the protagonist's castle was described as impregnable, showcasing the writer's skill in creating a sense of impenetrable defense.
In therapy sessions, clients may use the term 'impregnable' to describe their emotional walls or barriers that prevent them from opening up.
The military strategist devised a plan to breach the impregnable fortress using a combination of stealth and surprise tactics.
The cybersecurity analyst implemented multiple layers of security measures to make the company's network impregnable against cyber attacks.
The architect designed a building with impregnable security features to protect sensitive information stored within.
In historical accounts, certain fortresses or cities were described as impregnable due to their strategic location and formidable defenses.