unavoidable casualty

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a natural and unavoidable catastrophe that interrupts the expected course of events
- he discovered that his house was not insured against acts of God
• Syn:
act of God, force majeure, vis major, inevitable accident
• Hypernyms:
calamity, catastrophe, disaster, tragedy, cataclysm