brighten up Antonyms

weigh down shake sadden roughen pollute perturb pall overawe oppress kill haunt harrow grieve exercise shrivel tire get down devalue demote appal cast down wear upset unsettle unnerve unhinge undo torture torment erode enfeeble demoralize deject deepen debilitate daunt darken crush coarsen burden blacken bore appall agitate dent deplete enervate drain disturb disspirit