Synonyms and related words :
acute, apocalyptic, appointed, awe-inspiring, bad, baleful, baneful, black, bodeful, boding, calamitous, cataclysmal, cataclysmic, catastrophic, certain, conclusive, consequential, consuming, consumptive, critical, crucial, dark, deadly, decisive, demolishing, demolitionary, depredatory, desolating, destined, destroying, destructive, determinative, devastating, devoted, dire, direful, disastrous, doomed, doomful, dreary, earnest, evil, evil-starred, fatal, fated, foreboding, foredoomed, formidable, fratricidal, gloomy, grave, heavy, ill, ill-boding, ill-fated, ill-omened, ill-starred, important, imposing, in store, in the cards, inauspicious, indefeasible, ineluctable, inescapable, inevasible, inevitable, inexorable, inflexible, internecine, irresistible, irrevocable, lethal, lowering, major, marked, menacing, momentous, necessary, nihilist, nihilistic, of evil portent, ominous, ordained, pivotal, portending, portentous, ravaging, relentless, resistless, ruining, ruinous, self-destructive, serious, significant, sinister, sober, solemn, somber, subversionary, subversive, suicidal, sure, sure as death, sure as fate, threatening, unavoidable, uncontrollable, undeflectable, unfavorable, unfortunate, unlucky, unpreventable, unpromising, unpropitious, unstoppable, untoward, unyielding, vandalic, vandalish, vandalistic, wasteful, wasting, weighty, withering, written