The most common and most likely answer to this crossword clue is the 8 letter word EPILEPSY
E
P
I
L
E
P
S
Y
More clues leading to the result EPILEPSY
- Placed in centre pile: ‘Psychological Recurring Attacks‘
- Sly peep around catches one in fit condition
- Sherlock in sleepy, intoxicated condition
- Disease curtailed sight? Extra writing added to large amount probing that
- Fits a little over three in sleepy disposition
- Pepys possibly swallowing lie about reason for getting fit
- Lots to enter recording Sandy’s disheartening medical condition
- Greek letter penned by cook sleepy with a nervous disorder
- Fits loosely — I sleep peacefully, totally drained
Buddy explains!

The straight part
We know that "Fits" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fits = epilepsy.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 EPILEPSY mean?
EPILEPSY noun- A medical condition in which the sufferer experiences seizures (or convulsions) and blackouts.