Overfed and depressed around half term (5)
I believe the answer is:
sated
'overfed' is the definition.
(I've seen this in another clue)
'depressed around half term' is the wordplay.
'depressed' becomes 'sad' (I've seen this in another clue).
'around' indicates putting letters inside.
'half' suggests halving the letters.
'term' halved is 'te'.
'sad' enclosing 'te' is 'SATED'.
'and' is the link.
(Other definitions for sated that I've seen before include "fully filled" , "Filled to satisfaction" , "given more than enough" , "Fed up" , "fully indulged" .)