1. calamity, catastrophe, disaster, tragedy, cataclysm, misfortune, bad luck

usage: an event resulting in great loss and misfortune; "the whole city was affected by the irremediable calamity"; "the earthquake was a disaster"

2. catastrophe, disaster, adversity, hardship, hard knocks

usage: a state of extreme (usually irremediable) ruin and misfortune; "lack of funds has resulted in a catastrophe for our school system"; "his policies were a disaster"

3. catastrophe, cataclysm, geological phenomenon

usage: a sudden violent change in the earth's surface

WordNet 3.0 Copyright © 2006 by Princeton University.
All rights reserved.