cheerful
a common way to intensify the meaning of cheerful
to a very high degree of happiness
to a surprisingly high degree of happiness
to a noticeably or impressively high degree of happiness
to a moderate degree of happiness
nearly happy, but not completely
continuously and persistently happy, sometimes in an annoying way
pretending to be happy when one is not
to be in a state of happiness
to experience a feeling of happiness
to have a happy appearance
to appear to be happy, based on observation
to give the impression of being happy
to sound happy when speaking
to make an effort to continue being happy
to continue being happy (informal)
to continue to be in a happy state, often despite difficulties
to change from a less happy state to a happy one
to cause someone to remain in a happy state