11 letters · 17 points in Scrabble
noun a right reserved exclusively by a particular person or group (especially a hereditary or official right)
originFrom Anglo-Norman prerogative (noun), from Latin praerogātīva (“previous verdict; claim, privilege”), noun use of the feminine singular of praerogātīvus (“having first vote; privileged”).
Etymology from Wiktionary, CC BY-SA 3.0