impregnable
/ɪmˈprɛɡnəbəl/
adjective
- Impossible to capture or enter by force; very strongly defended.
- The castle was built on a hill and considered impregnable.
- Modern cybersecurity aims to make networks as impregnable as possible.
- The army failed to breach the city's impregnable walls.
- Not capable of being defeated or overcome; unshakable.
- The team's defense was impregnable, and they won every game.
- He had an impregnable alibi that no one could disprove.
- Her confidence in her abilities seemed impregnable.
Synonyms
Antonyms