The term 'timetable, for short' can be abbreviated in two ways: SKED (4 letters) and SCHED (5 letters). SKED is an abbreviation of the word 'SCHEDULE', while SCHED is an abbreviation of the word 'SCHEDULE'. Both words refer to a list of planned activities or events that are organized according to time. Timetables are commonly used in schools, businesses, and other organizations to plan and organize activities.