aikataulusi

Aikataulusi is the second-person singular possessive form of the Finnish noun aikataulu, meaning your schedule or your timetable. In Finnish, possessive suffixes attach to the noun to indicate ownership, and -si marks the second person singular. Therefore aikataulu becomes aikataulusi when referring to the listener’s schedule.

Etymology: Aikataulu is formed from aika, time, and taulu, a board or list, reflecting the traditional idea of a timetable posted as a list. The possessive suffix -si is added to produce aikataulusi for “your timetable.”

Usage: Aikataulusi is used in everyday language to denote ownership of a schedule by the person being spoken to. Examples include Täytyy tarkistaa aikataulusi before leaving, or Miten aikataulusi looks for next week? In practice, aikataulusi often appears with case endings in longer phrases, such as aikataulullasi (on your timetable) or aikataulusi mukaan (according to your schedule).

Notes: As with other Finnish possessive forms, the exact morphology can shift with different grammatical cases in a sentence, but aikataulusi primarily functions as a possessive noun phrase referring to the listener’s timetable. See also aikataulu, the base noun, and the general rules of Finnish possessive suffixes.