brighten
verb7 collocationsAvg. frequency: 7.2
brighten up8.5
to become more cheerful or pleasant; often used as a phrasal verb
to become brighter or happier quickly and unexpectedly
to become brighter or happier very quickly
to become slightly brighter or happier
to become slightly brighter or happier
to become brighter in a way that is easy to see
to become much brighter or happier