Supporting lifting obligation after fine or penalty (7)
I believe the answer is:
forfeit
'penalty' is the definition.
(I know that forfeit is a type of penalty)
'supporting lifting obligation after fine' is the wordplay.
'supporting' becomes 'for' (being for something means supporting it).
'lifting' says the letters should be written backwards.
'obligation' becomes 'tie' (I've seen this before).
'after' is a charade indicator (letters next to each other).
'fine' becomes 'f' (abbreviation).
'tie'+'f'='tief'
'tief' back-to-front is 'feit'.
'for'+'feit'='FORFEIT'
'or' acts as a link.
(Other definitions for forfeit that I've seen before include "Something given up as a penalty" , "Give up or lose the right to something" , "Effort I made to pay penalty" , "Penalty for wrongdoing" , "Sacrifice" .)