defaulter — A defaulter is someone who does not do something that they are legally supposed to do, such as make a payment at a particular time, or appear in a court of law.
debtor — A debtor is a country, organization, or person who owes money.
cheat — When someone cheats, they do not obey a set of rules which they should be obeying, for example in a game or exam.
shirker — a person who evades work, duty, responsibility, etc.
absentee — An absentee is a person who is expected to be in a particular place but who is not there.