Honourable, say to replace old boy before court reveals carelessness (7)
I believe the answer is:
neglect
'carelessness' is the definition.
(I know that carelessness can be written as neglect)
'honourable say to replace old boy before court' is the wordplay.
I cannot really see how this works, but
'say' could be 'eg' (both can mean 'for example') and 'eg' is found within the answer.
'before' could be 'e' (I've seen this in other clues) and 'e' is found within the answer.
'court' could be 'ct' (abbreviation used in road names) and 'ct' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
'reveals' acts as a link.
Can you help me to learn more?
(Other definitions for neglect that I've seen before include "Leave undealt with" , "Disuse" , "Give little attention to" , "Failure to do something" , "Fail to attend to properly, task or person" .)