lighten

make more cheerful

“the conversation lightened me up a bit”

become lighter

“The room lightened up”

make more cheerful through the use of color

become more cheerful

“after a glass of wine, he lightened up a bit”

alleviate or remove (pressure or stress) or make less oppressive

“lighten the burden of caring for her elderly parents”

reduce the weight on; make lighter

“she lightened the load on the tired donkey”