Badly aborted without a person who owes (6)
I believe the answer is:
debtor
'person who owes' is the definition.
'debtor' can be an answer for 'person' (debtor is a kind of person). I'm not sure about the remainder of the definition.
'badly aborted without a' is the wordplay.
'badly' is an anagram indicator (letters in the wrong order).
'without' is a deletion indicator.
'aborted' with 'a' taken out is 'borted'.
'borted' with letters rearranged gives 'DEBTOR'.
Can you help me to learn more?
(Other definitions for debtor that I've seen before include "Anyone owing money" , "One who owes money" , "Opposite of creditor" , "One owing money" , "Person who owes money" .)