What one is not well out of? (5)
I believe the answer is:
sorts
'what one is not' is the definition.
I can't judge whether this defines the answer.
'well out of?' is the wordplay.
I cannot really see how this works, but
'well' could be 'so' (both can mean extremely) and 'so' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for sorts that I've seen before include "Orders" , "Systematically arranges" , "Varieties" , "Places in correct or desired sequence" , "Categories" .)