curse, scourge, nemesis, brimstone, death, bale, hell, torment, death sentence, beast, more...

boon

poison, venom, disease, plague, pestilence, famine, war, terrorism, crime, pollution, more...

great, very, precious, chief, deadliest, proper, common, bare, real, white, eternal

source of misery,   source of distress,   hated thing,   cursed thing,   evil gift,   cause of affliction,   object of aversion,   rhymes with ain,   modern day scourge,   worst part in life