The word "sked" is a slang term that is commonly used to refer to a schedule or a timetable. However, there are a variety of synonyms that can be used instead of "sked" to convey the same or similar meaning. Some of the most common synonyms for "sked" include "schedule," "agenda," "timetable," "program," and "itinerary." Other similar words that can be used include "plan," "calendar," "routine," "arrangement," and "agenda." Using these synonyms can add variety and interest to your language and allow you to express yourself more creatively and effectively.