The most common and most likely answer to this crossword clue is the 8 letter word TWITTERS
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Buddy explains!
The straight part
We know that "Sound of some flying/butterflies" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sound of some flying/butterflies = twitters.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 TWITTERS mean?
TWITTERS verb- (sometimes proscribed) To tweet; to post an update to Twitter.
- The sound of a succession of chirps as uttered by birds.
- A tremulous broken sound.
- A slight trembling of the nerves.
- Unwanted flicker that occurs in interlaced displays when the image contains vertical detail that approaches the horizontal resolution of the video format.
- To utter a succession of chirps.
- (of a person) To talk in an excited or nervous manner.
- To make the sound of a half-suppressed laugh; to titter; to giggle.
- To have a slight trembling of the nerves; to be excited or agitated.
- To twit; to reproach or upbraid.