Feeling achy (4)
I believe the answer is:
sore
'feeling achy' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sore that I've seen before include "Painfully sensitive" , "Hurtful to the touch, like rose" , "Painful, aching; urgent" , "Painful, or the source of pain" , "Painful - resentful" .)