The most common and most likely answer to this crossword clue is the 8 letter word DIZZYING
I've seen this crossword clue in Financial Times
D
I
Z
Z
Y
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 DIZZYING mean?
DIZZYING verb- To make dizzy, to bewilder.
- Tending to make one (actually or metaphorically) dizzy or confused, as of great speed or height.