Stiff and sore (4)
I believe the answer is:
achy
'stiff and sore' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for achy that I've seen before include "Sore" , "Giving pain" , "Suffering minor pains" , "Dully painful" , "Feeling in need of an aspirin?" .)