Sneak exiting card game left with golden award (13)
I believe the answer is:
baccalaureate
'award' is the definition.
(baccalaureate is a kind of award)
'sneak exiting card game left with golden' is the wordplay.
I cannot really see how this works, but
'left' could be 'l' (common abbreviation) and 'l' is found in the answer.
'golden' could be 'aureate' (synonyms) and 'aureate' is found within the answer.
The remaining letters 'bacca' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for baccalaureate that I've seen before include "International alternative to A level" , "Type of degree" , "Educational qualification" , "test result" , "academic qualification" .)