The term cancellation refers to the act or process of ending, stopping, or calling off something that was previously planned or arranged. It could be a decision taken by an individual or organization to stop or abandon a project, event, agreement, or commitment due to various reasons such as lack of interest, unavailability of resources, changes in circumstances, or realization of a better alternative. Cancellation can also refer to the action of removing something from a list or schedule, or revoking an authorization or permission that was previously granted.