The most common and most likely answer to this crossword clue is the 10 letter word FLUTTERING
I've seen this crossword clue in The Daily Telegraph
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More clues leading to the result FLUTTERING
Buddy explains!
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 FLUTTERING mean?
FLUTTERING verb- To flap or wave quickly but irregularly.
- Of a winged animal: to flap the wings without flying; to fly with a light flapping of the wings.
- To cause something to flap.
- To drive into disorder; to throw into confusion.
- To be in a state of agitation or uncertainty.
- To be frivolous.
- Rapid back-and-forth waving or oscillation.