The most common and most likely answer to this crossword clue is the 5 letter word ARSIS
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More clues leading to the result ARSIS
Buddy explains!
The straight part
We know that "up-beat" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case up-beat = arsis.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ARSIS mean?
ARSIS noun- The stronger part of a musical measure: the part containing the beat.
- The stronger part of a metrical foot: the part containing the long (heavy) syllable in quantitative meter, or the stressed syllable in a qualitative meter.
- The elevation of the hand, or that part of the bar at which it is raised, in beating time; the weak or unaccented part of the bar, opposed to the thesis.
- The elevation of the voice to a higher pitch in speaking.