calamity
noun
the fire was only the latest calamity to strike the area:
disaster, catastrophe, tragedy, cataclysm, devastating blow, crisis, adversity, blight, tribulation, woe, affliction, evil;
misfortune, misadventure, accident, stroke of bad luck, reverse of fortune, setback, mischance, mishap;
British, informal car crash;
archaic bale;
Scottish, archaic mishanter.
▷antonyms godsend, blessing.