lighten

make more cheerful; "the conversation lightened me up a bit"

reduce the weight on; make lighter; "she lightened the load on the tired donkey"

become more cheerful; "after a glass of wine, he lightened up a bit"

make lighter or brighter; "The paint will brighten the room"

become lighter; "The room lightened up"

alleviate or remove (pressure or stress) or make less oppressive; "relieve the pressure and the stress"; "lighten the burden of caring for her elderly parents"