The most common and most likely answer to this crossword clue is the 5 letter word LILTS
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More clues leading to the result LILTS
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The straight part
We know that "rises and falls" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rises and falls = lilts.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 LILTS mean?
LILTS noun- Animated, brisk motion; spirited rhythm; sprightliness.
- A lively song or dance; a cheerful tune.
- A cheerful or melodious accent when speaking.
- To do something rhythmically, with animation and quickness, usually of music.
- To sing cheerfully, especially in Gaelic.
- To utter with spirit, animation, or gaiety; to sing with spirit and liveliness.