A more thorough explanation:

Definition: Voluntary and intentional, but not necessarily malicious.

Examples:

• He made a wilful decision to skip class and go to the beach.
• The company's wilful disregard for safety regulations resulted in a serious accident.

These examples illustrate that a wilful action is one that is done on purpose, with full knowledge and intention. However, it does not necessarily mean that the action was done with malicious intent or with the intention to cause harm. In the first example, the person chose to skip class and go to the beach, but it was not necessarily a harmful or malicious act. In the second example, the company ignored safety regulations, which was a wilful decision, but it may not have been done with the intention to harm anyone.