impregnable
🇺🇸
/ɪmˈpreɡnəbl/
🇬🇧
/ɪmˈpreɡnəbl/
A building or place that is so strong it cannot be broken into or captured.
The castle seemed impregnable, standing tall and strong against the storm.
성이 폭풍에 맞서 늙고 강하게 서 있는 모습은 공성할 수 없어 보였다.
A position, argument, or belief that is so strong it cannot be defeated or changed.
The team's strategy was so well planned that it seemed impregnable.
팀의 전략이 매우 잘 계획되어 공격하기 어려워 보였다.