Pick up catch: that’s raised cheer (7)
I believe the answer is:
hearten
'cheer' is the definition.
(synonyms)
'pick up catch that's raised' is the wordplay.
'pick up' becomes 'hear' (hearing is a kind of picking up).
'catch' becomes 'net' (netting is a kind of catching).
'that's raised' says the letters should be written in reverse.
'net' backwards is 'ten'.
'hear'+'ten'='HEARTEN'
(Other definitions for hearten that I've seen before include "Comfort" , "Make cheerful" , "Inspirit" , "given cheer" , "Make (someone) more confident" .)