Talk over ways to speak ill of (7)
I believe the answer is:
discuss
'talk over' is the definition.
(synonyms)
'ways to speak ill of' is the wordplay.
'ways' becomes 'cuss' (I can't explain this - if you can you should give a lot more credence to this answer).
'to' says to put letters next to each other (I've seen this in other clues).
'speak ill of' becomes 'dis' (I've seen this in another clue).
'cuss' after 'dis' is 'DISCUSS'.
(Other definitions for discuss that I've seen before include "Argue" , "Go into" , "Consider" , "Verbally T [TREAT]" , "Settle" .)