Weak, frail, or fragile; easily broken or lacking resilience. Used for physical things, systems, or conditions.
脆弱な橋は大きな地震で崩れる恐れがある。
A fragile bridge may collapse in a major earthquake.
彼女は病気のため体が脆弱になっている。
Her body has become frail because of illness.
システムの脆弱性が発見され、早急に対策が必要だ。
A vulnerability in the system was discovered and immediate countermeasures are required.