"Scam" is usually used to describe those who do not follow the rules, are not trustworthy, are dishonest, or try to evade responsibility. Specifically, the following are some characteristics of people who might be described as "cheating":

Disobeying the rules: Refers to a situation in a specific situation or deliberately violate established rules or guidelines in order to gain an unfair advantage or avoid responsibilities.

Dishonest: This type of person may have promised something but not fulfilled it, or they may not have kept their word in transactions or cooperation, causing the trust of others to be damaged.

Dishonesty: A "cheap" person may intentionally lie or deceive others to achieve his or her own ends.

Avoiding responsibility: They may try to avoid their own responsibilities or consequences and are unwilling to take responsibility for their actions.