Prattling on with giant rent adjustment (9)
I believe the answer is:
nattering
'prattling' is the definition.
The answer and definition can be both to do with communicating as well as being present participle verbs.
Perhaps there's an association between them I don't understand?
'with giant rent adjustment' is the wordplay.
'with' is a charade indicator (letters next to each other).
'adjustment' indicates an anagram (the order of letters is adjusted).
'giant' put next to 'rent' is 'giantrent'.
'giantrent' with letters rearranged gives 'NATTERING'.
'on' is the link.
Can you help me to learn more?
(Another definition for nattering that I've seen is " Chatting away".)