Having achy muscles (4)
I believe the answer is:
sore
(Other definitions for sore that I've seen before include "Rose (anag.)" , "Bruised" , "Hurting, painful" , "Painful, aching; urgent" , "source of distress" .)
I believe the answer is:
sore
(Other definitions for sore that I've seen before include "Rose (anag.)" , "Bruised" , "Hurting, painful" , "Painful, aching; urgent" , "source of distress" .)