noun
disaster, calamity, mishap, mischance, misadventure, failure, fiasco, misery, accident, trouble, casualty, misfortune, infliction, affliction, contretemps, stroke, havoc, ravage, wreck, fatality, grief, crash, devastation, desolation, avalanche, hardship, blow, visitation, ruin, reverse, emergency, scourge, cataclysm, convulsion, debacle, tragedy, adversity, bad luck, upheaval, down*; see also disaster, misfortune 1, 2.
Antonyms benefit, triumph, good luck. See syn. study at disaster.disaster.