Other forms: deadbeats
A deadbeat is someone who owes money or has other financial obligations and doesn't meet them. Deadbeats don't pay their bills.
This is an insult that is very specific: deadbeats don't pay what they owe. If someone went to a restaurant and didn't pay, the manager might say "You deadbeat!" If you don't pay a cable or phone bill, you're a deadbeat. A roommate who doesn't pay their share of the rent is a deadbeat. People often talk about deadbeat dads who abandon their children and don't pay child support. A more formal word for a deadbeat is defaulter.