Meaning of the word impregnable in English

What does impregnable mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

impregnable

US /ɪmˈpreɡ.nə.bəl/
UK /ɪmˈpreɡ.nə.bəl/

Adjective

1.

unable to be captured or broken into

Example:
The fortress was considered impregnable.
Their defense was impregnable, allowing no goals.
2.

not able to be overcome or defeated

Example:
His arguments were logically impregnable.
The company's position in the market was impregnable.