One month camping following a repayment (9)
I believe the answer is:
atonement
'repayment' is the definition.
(thesaurus)
'one month camping following a' is the wordplay.
I cannot quite understand how this works, but
'one' could be 'me' (a setter might use 'one' to humourously mean 'me') and 'me' is found within the answer.
'a' could be 'one' and 'one' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for atonement that I've seen before include "Making amends" , "Compensation for a wrong" , "reparations?" , "satisfaction" , "Expiation of sin, penance" .)