1590s, "arithmetical table," also "official list or table of customs duties on goods for import or export;" also "a law regulating import duties," from Italian tariffa "tariff, price, assessment," Medieval Latin tarifa "list of prices, book of rates," ultimately from Arabic ta'rif "information, notification, a making known; inventory of fees to be paid," verbal noun from arafa "he made known, he taught." A word passed to English from the commercial jargon of the medieval Mediterranean (compare garble, jar (n.), average (perhaps), orange, tabby, etc.).
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