The most common and most likely answer to this crossword clue is the 8 letter word TOHUBOHU
T
O
H
U
B
O
H
U
Buddy explains!
The straight part
We know that "chaos" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case chaos = tohubohu.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 TOHUBOHU mean?
TOHUBOHU noun- Chaos, disorder, confusion.