perquisite Look up perquisite at Dictionary.com
1450, "property acquired other than by inheritance," from M.L. perquisitum "thing gained, profit," in L., "thing sought after," from neut. pp. of perquirere "to seek, ask for," from per- "thoroughly" + quærere "to seek" (see query). For L. vowel change, see acquisition. General meaning "fee or profit on top of regular wages" first recorded 1565.