Little in the way of support for such spiteful talk! (10)
I believe the answer is:
backbiting
'spiteful talk' is the definition.
(term for unkind talk about someone not present)
'little in the way of support' is the wordplay.
'little' becomes 'bit' (I've seen this in other clues).
'in the way of' is an insertion indicator.
'support' becomes 'backing' (backing is a kind of support).
'bit' inserted inside 'backing' is 'BACKBITING'.
'for such' is the link.
(Other definitions for backbiting that I've seen before include "Malicious talk" , "making spiteful comments" .)