The most common and most likely answer to this crossword clue is the 8 letter word FETISHES
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Buddy explains!
The straight part
We know that "Compulsions" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case compulsions = fetishes.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 FETISHES mean?
FETISHES noun- Something which is believed to possess, contain, or cause spiritual or magical powers; an amulet or a talisman.
- Sexual attraction to or arousal at something sexual or nonsexual, such as an object or a part of the body.
- An irrational, or abnormal fixation or preoccupation; an obsession.