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upbeat

[uhp-beet] /ˈʌpˌbit/
noun, Music.
1.
an unaccented beat, especially immediately preceding a downbeat.
2.
the upward stroke with which a conductor indicates such a beat.
adjective
3.
optimistic; happy; cheerful:
television dramas with predictably upbeat endings.
Origin of upbeat
1865-1870
1865-70; 1950-55 for def 3; up- + beat
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for upbeat

upbeat

/ˈʌpˌbiːt/
noun
1.
(music)
  1. a usually unaccented beat, esp the last in a bar
  2. the upward gesture of a conductor's baton indicating this Compare downbeat
2.
an upward trend (in prosperity, etc)
adjective
3.
(informal) marked by cheerfulness or optimism
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for upbeat
adj.

"with a positive mood," 1947, apparently from the musical noun upbeat (1869), referring to the beat of a bar at which the conductor's baton is in a raised position; the "optimistic" sense apparently for no other reason than that it sounds like a happy word (the musical upbeat is no more inherently "positive" than any other beat). Expression on the upbeat "improving, getting better" is recorded from 1934.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for upbeat

up a storm

adverb phrase

Very intensively; very diligently; very competently: and they're really dancing up a storm (1953+)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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10
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