an act that has disastrous consequences破滅的な結果となる行為遭難
an event resulting in great loss and misfortune; "the whole city was affected by the irremediable calamity"; "the earthquake was a disaster"大損害や不幸をもたらす出来事非運
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"極度の(通常取り返しのつかない)崩壊と不運な状態難