brightenup
verbUK /ˈbraɪ.tən.ʌp/
US /ˈbraɪ.t̬ən.ʌp/
To make something look or feel happier and lighter.
We brightened up the room with some colorful balloons.
RELATED WORDS
OTHER MEANINGS
2. To become brighter in light or color.
The sky began to brighten up after the storm.
3. To make a place look more attractive or pleasant.
She brightened up the garden with fresh flowers.
4. To become more cheerful in mood.
He brightened up when he heard the good news.