Contumely (noun)

1. Rudeness or disrespect shown to someone; insult.
2. Insolent or disdainful language or behavior.

Origin:

Derived from the latin word "contumelia" meaning rudeness, disrespect or insult.

Examples:

1. The ruler was not accustomed to such contumely.
2. The employee was fired for contumely towards his superior.
3. The student was expelled for contumely towards his teachers.
4. The guest was asked to leave for contumely towards the host.
5. The customer was banned for contumely towards the staff.