Contract daughter to replace son in scam (7)
I believe the answer is:
dwindle
'contract' is the definition.
(thesaurus)
'daughter to replace son in scam' is the wordplay.
I cannot really understand how this works, but
'daughter' could be 'd' and 'd' is found within the answer.
'in' is within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for dwindle that I've seen before include "Flag" , "(Flow) decrease" , "Grow smaller, taper off" , "become weaker" , "Die away" .)