lighten (Verb) — Make more cheerful. ex. "the conversation lightened me up a bit"
lighten (Verb) — Reduce the weight on; make lighter. ex. "she lightened the load on the tired donkey"
lighten (Verb) — Become more cheerful. ex. "after a glass of wine, he lightened up a bit"
lighten (Verb) — Make lighter or brighter. ex. "The paint will lighten the room"
lighten (Verb) — Become lighter. ex. "The room lightened up"
lighten (Verb) — Alleviate or remove (pressure or stress) or make less oppressive. ex. "lighten the burden of caring for her elderly parents"