Impose fee on Roman Catholic, when straying (7)
I believe the answer is:
enforce
'impose' is the definition.
(synonyms)
'fee on roman catholic when straying' is the wordplay.
I cannot really see how this works, but
'on' could be 'o' (I've seen this in other clues) and 'o' is located in the answer.
'roman' could be 'rc' (synonyms) and 'rc' is present in the answer.
'when' could be 'e' (I've seen this in other clues) and 'e' is found 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 enforce that I've seen before include "Impose compliance with (a law)" , "Compel compliance or obedience" , "Impose with power" , "Ensure observance of rules" , "Implement - compel" .)