catastrophic

adjective

1 catastrophic

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Moby thesaurus: baneful, black, calamitous, cataclysmal, cataclysmic, consuming, consumptive, deadly, demolishing, demolitionary, depredatory, desolating, destroying, destructive, devastating, dire, disastrous, doomful, fatal, fateful, fratricidal, grievous, insurrectionary, internecine, nihilist, nihilistic, radical, ravaging, revolutional, revolutionary, revulsionary, revulsive, ruining, ruinous, self-destructive, subversionary, subversive, suicidal, sweeping, tragic, transilient, vandalic, vandalish, vandalistic, wasteful, wasting, withering, wreckful ... show more.

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