Valuer calls regularly in relation to hearing (5)
I believe the answer is:
aural
'to hearing' is the definition.
(thesaurus)
'valuer calls regularly' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'valuer'+'calls'='valuercalls'
The alternate letters of 'valuercalls' are 'AURAL'.
'in relation' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for aural that I've seen before include "Relating to sense of hearing" , "To do with an ear or hearing" , "of the listener" , "Pertaining to the ear" , "of air" .)