Once more talk over concerning insult and curse (9)

I believe the answer is:

rediscuss

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'once more talk over' is the definition.
('discuss' can be a synonym for 'talk over' so perhaps 'rediscuss' is OK for 'once more talk over')

'concerning insult and curse' is the wordplay.
I cannot quite understand how this works, but
'concerning' could be 're' (both can mean on a particular topic) and 're' is found within the answer.
'insult' could be 'dis' (I've seen this in another clue) and 'dis' is present in the answer.
'curse' could be 'cuss' (synonyms) and 'cuss' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Independent.

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