Permit one to move after damaging allegations (7)
I believe the answer is:
Here is my best explanation:
'permit' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'one to move after damaging allegations' is the wordplay.
'one' becomes 'a'.
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'move' becomes 'ber' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'after' means one lot of letters go next to another.
'damaging allegations' becomes 'mud' (I've seen this before).
'a' put after 'bermud' is 'BERMUDA'.
(Other definitions for bermuda that I've seen before include "shorts originated here", "Islands in the north-west Atlantic", "producer", "The capital is Hamilton", "Island group in NW Atlantic", "Group of islands in West Atlantic - has notorious Triangle", "Producer of rum", "British colony, capital Hamilton", "NW Atlantic colony" and "British self-governing overseas territory in the North Atlantic".)