The most common and most likely answer to this crossword clue is the 11 letter word MASOCHISTIC
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The straight part
We know that "after cruel treatment?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case after cruel treatment? = masochistic.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 MASOCHISTIC mean?
MASOCHISTIC adjective- Deriving (especially sexual) pleasure from abuse, being punished, or dominated.