Definition: an unaccented beat (especially the last beat of a measure)
Main entry: upbeat, welfare, well-being, wellbeing, eudaemonia, eudaimonia
Definition: a contented state of being happy and healthy and prosperous
Usage: the town was finally on the upbeat after our recent troubles
Main entry: cheerful, upbeat, pollyannaish
Definition: pleasantly (even unrealistically) optimistic