Definitions

1. adjective

Done or done on purpose; intentional; deliberate.

“She was charged with a wilful disregard for safety regulations.”

2. noun

A person who acts in a deliberately obstinate and disobedient manner.

“The wilful child refused to follow the teacher’s instructions.”

3. adverb

In a deliberately obstinate and disobedient manner.

“She behaved wilfully and refused to apologize.”