A more thorough explanation:

Professional negligence, also known as malpractice, is when a professional fails to fulfill their duty to a client. This can happen in any profession, from doctors to lawyers to accountants.

For example, if a doctor fails to diagnose a patient's illness correctly and the patient suffers harm as a result, the doctor may be guilty of professional negligence. Similarly, if a lawyer fails to file important paperwork on time and their client loses a case, the lawyer may be guilty of professional negligence.

These examples illustrate how a professional's failure to fulfill their duty can have serious consequences for their clients. It is important for professionals to take their responsibilities seriously and to always act in their clients' best interests.