Rescheduler

Part of speech: noun

Definitions

1. An individual or mechanism that alters previously set schedules or arrangements
2. A person or device that revises timelines and modifies appointment plans
3. A person or tool that changes the time or date of planned events

Etymology: "Rescheduler" is a plain formation: the verb "reschedule" with the agent suffix "-er" attached, producing a noun for a person or device that changes an existing timetable. The verb itself is built from "re-", meaning "again" or "back", and "schedule", which came into English from Old French "cedule" and ultimately from Medieval Latin "schedula", a small strip of paper or a slip of writing. So the word sits at the end of a chain that began with a scrap of paper and now describes anything that moves the appointments written on it. Because the word is a straightforward combination of existing parts, its meaning follows directly from them: "re-" reverses or repeats the act of scheduling, and "-er" marks the doer of the action, whether a person, such as a clerk who shifts bookings, or a piece of software or machinery that reorders tasks automatically.