What's the "een" in Halloween?
early 15c., "one who holds a degree" (with man; as a stand-alone noun from mid-15c.), from Medieval Latin graduatus, past participle of graduari "to take a degree," from Latin gradus "step, grade" (see grade). As an adjective, from late 15c.
early 15c., "to confer a university degree upon," from Medieval Latin graduatus (see graduate (n.)). Intransitive sense from 1807. Related: Graduated; graduating.
graduated grad·u·at·ed (grāj'ōō-ā'tĭd)
Marked with or divided into intervals, as of volume or temperature, for use in measurement.