Child's hero hurt, twice snubbed by Adult Choice (9)
I believe the answer is:
recherche
'choice' is the definition.
(I've seen this before)
'child's hero hurt twice snubbed by adult' is the wordplay.
I cannot really see how this works, but
'child' could be 'ch' (abbreviation for child) and 'ch' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for recherche that I've seen before include "choice" , "Rare or exotic (French)" , "Rare, exotic, obscure" , "Little-known" , "Rare or far-fetched, like her creche" .)