The term 'Brief Timetable' can be represented by two crossword solutions: SKED (4 letters) and SCHED (5 letters). SKED is an informal term for a schedule or timetable, while SCHED is a more formal version of the same word. Both terms refer to a plan that outlines when certain activities should take place. A brief timetable is a concise version of this plan, providing only the most essential information.