catastrophic

calamitous cataclysmic cataclysmal costliest costlier costly destructive dire direst disastrous fateful fatal harmful hellfire ill-fated/ill-starred ill-fated more ill fated more ill fated more ill starred more illstarred more illfated more illfated more ill-fated more ill-fated more ill-starred most ill starred most ill-starred most illstarred most ill-fated most ill-fated most illfated most illfated most ill fated most ill fated ruinous star-crossed tumbledown unlucky woeful