Meaning : A contented state of being happy and healthy and prosperous.
The town was finally on the upbeat after our recent troubles.
Synonyms : eudaemonia, eudaimonia, welfare, well-being, wellbeing
Meaning : An unaccented beat (especially the last beat of a measure).
Synonyms : offbeat
Meaning : Pleasantly (even unrealistically) optimistic.
Synonyms : cheerful, pollyannaish