Stealing too much in passing (10)
I believe the answer is:
overtaking
'passing' is the definition.
(I know that passing can be written as overtaking)
'stealing too much' is the wordplay.
I cannot really understand how this works, but
'stealing' could be 'taking' (I've seen this before) and 'taking' is present in the answer.
'too much' could be 'over' (over can mean to too great an extent) and 'over' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'in' acts as a link.
Can you help me to learn more?
(Another definition for overtaking that I've seen is " Passing".)