Conflict when learner’s missing money (4)
I believe the answer is:
cash
'money' is the definition.
(cash is a type of money)
'conflict when learner's missing' is the wordplay.
I cannot really understand how this works, but
'when' could be 'as' (eg 'when I walked' means 'as I walked') and 'as' is located in the answer.
The remaining letters 'ch' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for cash that I've seen before include "Spondulicks" , "Funds" , "Money in the form of notes and coins" , "Wimbledon champion" , "Till" .)