upbeat
名词 upbeat:
a contented state of being happy and healthy and prosperous
同义词:wellbeing, well-being, welfare, eudaemonia, eudaimonia
an unaccented beat (especially the last beat of a measure)
同义词:offbeat
形容词 upbeat:
pleasantly (even unrealistically) optimistic
同义词:cheerful, pollyannaish