1. Cancel (v): to decide that something arranged in advance will not happen
Ex: My flight was cancelled.
2. Appointment (n): an arrangement to meet or visit someone at a particular
time and place
Ex: I'd like to make an appointment with Dr Evans, please.
3. Inform (v): to tell someone about something
Ex: She informed her staff that she was having a meeting.
4. Emergency (n): a dangerous or serious situation, such as an accident, that
happens suddenly and needs immediate action
Ex: In an emergency, please dial 911 for an ambulance.
5. Schedule (v): to arrange that an event or activity will happen at a particular
time
Ex: The meeting has been scheduled for tomorrow afternoon