Up after midnight in central part of Sweden (6)
I believe the answer is:
elated
'up' is the definition.
Both the answer and definition are adjectives. Perhaps there's an association between them I don't understand?
'midnight in central part of sweden' is the wordplay.
'midnight' becomes 'late' (I can't justify this - if you can you should give a lot more credence to this answer).
'in' is an insertion indicator.
'central part of' indicates the central letters.
The centre of 'sweden' is 'ed'.
'late' going within 'ed' is 'ELATED'.
'after' acts as a link.
Can you help me to learn more?
(Other definitions for elated that I've seen before include "Filled with joy and pride" , "Exhilarated, highly excited" , "Cock-a-hoop" , "Jubilant, overjoyed" , "Jubilant, happy and excited" .)