The most common and most likely answer to this crossword clue is the 8 letter word FRETTING
I've seen this crossword clue in Financial Times
F
R
E
T
T
I
N
G
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 FRETTING mean?
FRETTING verb- Especially when describing animals: to consume, devour, or eat.
- To chafe or irritate; to worry.
- To make rough, to agitate or disturb; to cause to ripple.
- In the form fret out: to squander, to waste.
- To gnaw; to consume, to eat away.
- To be chafed or irritated; to be angry or vexed; to utter peevish expressions through irritation or worry.
- To be worn away; to chafe; to fray.
- To be anxious, to worry.
- To be agitated; to rankle; to be in violent commotion.
- To have secondary fermentation (fermentation occurring after the conversion of sugar to alcohol in beers and wine) take place.
- To decorate or ornament, especially with an interlaced or interwoven pattern, or with carving or relief (raised) work.
- To form a pattern on; to variegate.
- To cut through with a fretsaw, to create fretwork.
- To bind, to tie, originally with a loop or ring.
- Musical senses.
- Action of the verb to fret.