The most common and most likely answer to this crossword clue is the 8 letter word DOTTIEST
D
O
T
T
I
E
S
T
More clues leading to the result DOTTIEST
Buddy explains!

The straight part
We know that "most crazy" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case most crazy = dottiest.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 DOTTIEST mean?
DOTTIEST adjective- Mildly insane or eccentric; often, senile.
- Having an unsteady gait.
- Having many dots.