Discharged (a debt) (7)
'discharged a debt' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for paid that I've seen before include "Trite phrase" , "Settled debt" , "Compensated" , "Forked out" , "Hired" .)
(Other definitions for settled that I've seen before include "Took up residence" , "Put down roots; decided" , "Colonised; decided" , "Resolved (an argument)" , "came to agreement" .)