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"Invulnerable" vs. "impregnable": what sets them apart?

Reviewed and edited by Lloyd Cooper 06/07/2025, 16:07
English.me team member
Invulnerable and impregnable. What's the difference?

What is similar?

Both "invulnerable" and "impregnable" describe something that cannot be harmed or overcome, often implying strength, resistance, or protection against attack or damage.

What is different?

"Invulnerable" usually refers to being immune or resistant to physical or emotional harm, injury, or attack in general. "Impregnable" most often describes a place, fortress, or defense that cannot be captured or breached, but can sometimes be used metaphorically.

Which one is more common?

Internet search results for invulnerable) and impregnable

Examples of usage

Invulnerable
  • Superheroes in comics are often portrayed as invulnerable to bullets.
  • She seemed invulnerable to criticism, never letting harsh words affect her.
  • The new coating makes the device invulnerable to water damage.
Impregnable
  • The castle was considered impregnable with its thick walls and deep moat.
  • Their defense strategy was so strong it appeared impregnable.
  • The fortress proved impregnable during the long siege.