Gratingly utters abrasive things (5)
I believe the answer is:
rasps
'gratingly utters' is the definition.
'rasps' can be an answer for 'utters' (rasping is a kind of uttering). I am not certain of the 'gratingly' bit.
'abrasive things' is the wordplay.
'abrasive' becomes 'r' (I am not sure about this - if you are sure you should believe this answer much more).
'things' becomes 'asps' (I have seen 'poisonous things' mean 'asps' so perhaps 'things' could also mean 'asps').
'r'+'asps'='RASPS'
Can you help me to learn more?
(Other definitions for rasps that I've seen before include "fruit briefly" , "Coarse files" , "Scrapes" , "speaks hoarsely" , "Jars" .)