After short break, pressing to be on the up again (9)
I believe the answer is:
resurgent
'be on the up again' is the definition.
(resurgent means surging or on the up again)
'after short break pressing' is the wordplay.
'after short break' becomes 'res' (I can't explain this - if you can you should believe this answer much more).
'pressing' becomes 'urgent' (synonyms).
'res'+'urgent'='RESURGENT'
'to' is the link.
Can you help me to learn more?
(Other definitions for resurgent that I've seen before include "Reviving after period of inactivity" , "Reviving after a lull" , "Reviving in popularity" , "reborn" , "Coming back to life" .)