Like the coat you bought that’s not hanging up (3,3,3)
I believe the answer is:
off the peg
'hanging up' is the definition.
The definition suggests an adjective which matches the answer.
'like the coat you bought that's not' is the wordplay.
I cannot really see how this works, but
'like' could be 'eg' (I've seen this in other clues) and 'eg' is present in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found within the answer.
'not' could be 'o' (I've seen this in other clues) and 'o' is found 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 off the peg that I've seen before include "Ready to wear" , "available now" , "already made up" , "(Of clothes) ready-made" , "Not bespoke" .)