Synonyms of 'disastrous'

appalling, awful, baneful, Black, calamitous, cataclysmic, catastrophic, consumptive, convulsive, deadly, depredatory, destructive, detrimental, devastating, dire, dreadful, fatal, fateful, grievous, hapless, harmful, horrendous, horrible, internecine, jerky, luckless, ruinous, seismic, spasmodic, spastic, subversive, suicidal, terrible, tragic, unfortunate, unlucky, wasteful, wasting, wreckful