V2 Vocabulary Building Dictionary



Definition: 1. unbreachable, impenetrable, and therefore safe; 2. unable to be moved, shaken, or harmed by outside opinions

Synonyms: impenetrable, invulnerable, fortified, indestructible, unbeatable, invulnerable, secure, irrefutable, indisputable

Antonyms: penetrable, pregnable, vulnerable, insecure, uncertain, contestable

Tips: Impregnable is often used to describe a city, fortress, or other place thought to be safe and well-protected from outside attack. Impregnable can be used to describe anything that can not be penetrated. It is also used to describe an argument or position which is secure and irrefutable. Impregnable also means "capable of being fertilized or impregnated."

Usage Examples:

Our military bases are impregnable fortresses. (impenetrable)

Her argument is absolutely sound and impregnable; you really can't refute her point. (unbeatable, secure, irrefutable)

The IT team built an impregnable network that could not be hacked and kept viruses from penetrating company computers. (impenetrable, fortified, secure)

Even with the best home security, your home is never completely impregnable against determined thieves. (impenetrable, fortified, secure)

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