Conceal money, reportedly (5)
I believe the answer is:
cache
'conceal' is the definition.
(I've seen this in another clue)
'money reportedly' is the wordplay.
'money' becomes 'cash' (cash is a type of money).
'reportedly' shows a homophone (sound like).
'cash' is a homophone of 'CACHE'.
(Other definitions for cache that I've seen before include "Hidden storage space" , "Secret store, hoard" , "Hidden storage place" , "Hiding place for treasure or stores" , "Treasury" .)