Definition of upbeat
(Entry 1 of 2)
1
: an unaccented beat or portion of a beat in a musical measure
specifically
: the last beat of the measure
2
: an increase in activity or prosperity
business that is on the upbeat
upbeat
adjectiveDefinition of upbeat (Entry 2 of 2)
: cheerful, optimistic
I'm feeling upbeat today
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Merriam-Webster unabridged
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Time Traveler for upbeat
The first known use of upbeat was in 1869
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