A more thorough explanation:

Definition: Illegality refers to an act that is not allowed by law or the state of not being legally authorized.

For example, if a person steals something, it is considered illegal because it is against the law. Similarly, if a company operates without the necessary permits or licenses, it is acting illegally.

Another example of illegality is a contract that is made ultra vires, which means it goes beyond the legal powers of the parties involved. Such a contract is considered void and unenforceable.

These examples illustrate how illegality refers to actions or agreements that are not permitted by law. It is important to follow the law to avoid legal consequences and ensure fairness and justice for all.