Father takes the letting charge for mother and father (8)
I believe the answer is:
parental
'charge for mother and father' is the definition.
I can't tell whether this defines the answer.
'father takes the letting' is the wordplay.
'father' becomes 'pa' (pa can mean dad or father).
'takes' means one lot of letters go next to another.
'the letting' becomes 'rental' (synonyms).
'pa'+'rental'='PARENTAL'
Can you help me to learn more?
(Other definitions for parental that I've seen before include "Of mother and/or father" , "of some older relatives" , "of father, perhaps" , "like mum and dad" , "of old man and woman" .)