Verb
(intransitive, said of the weather) To become brighter
(transitive) To make cheerful.
Her kindness brightened up my day.
You can brighten up a room by hanging new wallpaper.
If you were music, I would listen to you ceaselessly, and my low spirits would brighten up. Anna Akhmatova
When you're down and troubled And you need some loving care And nothing, nothing is going right. Close your eyes and think of me And soon I will be there To brighten up even your darkest nights. Carole King
Of course, it does depend on the people, but sometimes I'm invited places to kind of brighten up a dinner table like a musician who'll play the piano after dinner, and I know you're not really invited for yourself. You're just an ornament. Marilyn Monroe
I help out at Tall Trees, which my aunt set up on the Central Coast. It's where intellectually impaired young people can paint. Their artwork's sent to hospitals all over Australia to brighten up their rooms. Jessica McNamee
A quintessential spring duvet to brighten up your bedroom. Source: Internet
Every detail was looked into — if the team felt that a room needed something to brighten up the background, then a lamp was promptly sent over to the actor’s home. Source: Internet