#1 disaster n. [catastrophe] 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". wn
#2 disaster n. [calamity, catastrophe, tragedy, cataclysm] an event resulting in great loss and misfortune; "the whole city was affected by the irremediable calamity"; "the earthquake was a disaster". wn
#3 disaster n. an act that has disastrous consequences. wn
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