bright·en 
/ˈbraɪtn̩/ verb
bright·ens; bright·ened; bright·en·ing /ˈbraɪtn̩/ verb 1 [+ obj] : to add more light to (something)
▪ He brightened the picture on the television. 2 a [+ obj] : to make (something) more colorful or cheerful
▪ Flowers can brighten any room. ▪ The good news brightened her mood. — often + up ▪ She always brightens up a party. ▪ You really brightened up my day.
b [no obj] : to become brighter or more cheerful
▪ The sky brightened after the storm. ▪ Her mood brightened. ▪ Her eyes brightened. ▪ Business prospects brightened last month. ▪ Her face brightened in relief when she heard that he was not hurt.
▪ He brightened the picture on the television.
▪ Flowers can brighten any room. ▪ The good news brightened her mood. — often + up ▪ She always brightens up a party. ▪ You really brightened up my day.
b [no obj] : to become brighter or more cheerful
▪ The sky brightened after the storm. ▪ Her mood brightened. ▪ Her eyes brightened. ▪ Business prospects brightened last month. ▪ Her face brightened in relief when she heard that he was not hurt.
