### Clue: She used to come out with it in entry on left (5)
### Answer: DEBIT 
 ### Explanation: Definition: entry on left
  DEB(short for debutante, a young girl introduced to society,come out in a grand occasion, basically signalling she's ready for it – does "used" mean this practice is defunct now?) **plus**(with) IT.
Answer:  In accountancy, specifically double-entry book-keeping, a debits was/is traditionally an entry on the left side, and a credit on the right – in a mostly right-handed species, the left-hand more often than not takes the rap!