He 'cheerfully' admitted that he was wrong.
He seems a little more 'cheerful' today.
She has a 'cheerful' outlook on life.
(..) The monster had killed somebody, Ron. What would any of us have done? Look, Hagrid's our friend. Why don't we just go and ask him about it? That would be a cheerful visit. ''Hello, Hagrid. Tell us, have you been setting anything mad and hairy loose in the castle lately?'' about me, now, would you? (..)2002 Harry Potter and the Chamber of Secrets