Stops getting better at cards? (5,2)
I believe the answer is:
packs up
'stops' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'better at cards?' is the wordplay.
'better' becomes 'sup' (I can't explain this - if you can you should give a lot more credence to this answer).
'at' says to put letters next to each other (I've seen this in other clues).
'cards?' becomes 'pack'.
'sup' after 'pack' is 'PACKS UP'.
'getting' is the link.
Can you help me to learn more?
(Other definitions for packs up that I've seen before include "stops working" , "Conks out" , "tidies things away" .)