pregnable
/ˈpregnəbl/adjective
- vulnerable to attack; not impregnable可攻克的, 易受攻击的：
the fort's pregnable approaches.
堡垒易受攻击的几处入口。
词源
late Middle English: from Old French prenable, literally 'takable'， from Latin prehendere 'seize'. The g was sometimes written in French， perhaps indicating palatal n, but has come to be pronounced as a separate sound in English.