C, for 'commission'.
c for commission
Vandal
The word 'newbie' might be what you are looking for. Or novice. Try novice before newbie.
You can describe a person using the letter s by silly.
An elderly person could be described as youthful. It begins with the letter Y.
Commission is received as incentive pay by a sales person. The letter c is the first letter of commission.
commission
commission
commission
commission
commission
c for commission
c for commission
c for commission
c for commission
c
c for commission