Origins
The English word 'usury' entered the language around 1310 from Anglo-Norman French 'usurie,' from Medieval Latin 'ūsūria,' a derivative of Latin 'ūsūra' (use, enjoyment, interest on a loan). The Latin word comes from 'ūsus' (use, employment), the past participle of 'ūtī' (to use, to employ, to avail oneself of). At its root, usury is simply 'a charge for use' — a fee paid for the privilege of using someone else's money. The condemnatory overtone that the word carries in modern English was not original to the Latin but was layered on by centuries of religious, moral, and legal opposition to the practice of lending at interest.
The Latin verb 'ūtī' produced a substantial English word family. 'Use' itself came through Old French 'user.' 'Utility' (usefulness) came from Latin 'ūtilitās.' 'Usual' (commonly used) came from Late Latin 'ūsuālis.' 'Abuse' (to use badly) combines 'ab-' (away from, wrongly) with 'ūtī.' 'Utensil' (a tool, something used) came from Latin 'ūtensilia' (things for use). The word 'usury' thus sits within a family whose shared concept is use — and the moral question at the heart of usury has always been whether charging for the use of money is a legitimate form of use or an abuse.
The prohibition of usury is one of the oldest and most widespread moral principles in human civilization. The Hebrew Bible forbids charging interest to fellow Israelites (Exodus 22:25, Deuteronomy 23:19-20), though interest on loans to foreigners was permitted. Aristotle argued that money was inherently barren — it could not breed more money — and that charging interest was therefore unnatural. The early Christian church adopted this view, and the prohibition of usury became a cornerstone of medieval canon law. The Quran prohibits 'riba' (interest or usury), and Islamic banking to this day structures financial products to avoid direct interest charges.
Eastern Roots
The medieval prohibition created an enormous practical problem: commerce requires credit, and credit requires compensation for the lender's risk and opportunity cost. The solution, across Christian Europe, was a combination of legal fictions, exemptions, and the delegation of lending to those outside the prohibition. Jewish communities, barred from many other occupations and not subject to the Christian prohibition on lending to non-Jews, became prominent moneylenders — a role that generated both wealth and intense anti-Semitic hostility. Shakespeare's 'The Merchant of Venice,' with its Jewish moneylender Shylock, dramatizes the tensions that usury laws created between communities.
The word 'usury' underwent a crucial semantic shift during the early modern period. Originally, it meant any interest on a loan — charging even one percent was usury. As economic thinking evolved and the practical necessity of credit became undeniable, the meaning narrowed: 'usury' came to mean not interest per se but excessive or exploitative interest. This shift was codified in English law by Henry VIII's Statute of 1545, which legalized interest up to 10 percent while condemning higher rates as usury. The word thus moved from describing a prohibited practice to describing the extreme end of a permitted one.
The figure of the 'usurer' became one of the stock characters of medieval and early modern literature. Dante placed usurers in the seventh circle of Hell in his 'Inferno,' seated on burning sand under a rain of fire, alongside blasphemers and sodomites — all three sins were considered 'violence against God' because they violated the natural order. The usurer forced barren money to breed; the blasphemer denied God's word; the sodomite perverted natural generation. The grouping reveals how deeply the prohibition of interest was embedded in medieval theology.
Later History
Modern 'usury laws' exist in many jurisdictions but have been significantly weakened. In the United States, usury laws vary by state and have been substantially undermined by federal deregulation, particularly the Supreme Court's 1978 Marquette decision, which allowed banks to export the interest rates of their home state to customers nationwide. This effectively allowed banks to relocate to states with no usury caps (notably South Dakota and Delaware) and charge high interest rates everywhere. The payday lending industry, credit card interest rates, and various forms of consumer lending that charge annual rates exceeding 100 percent would have been unambiguously classified as usury under traditional definitions.
The word 'usury' retains its moral charge in modern English. To call a lending practice 'usurious' is to condemn it — the word carries millennia of religious and ethical opposition to exploitative lending. The distinction between legitimate interest and usurious exploitation remains as contested today as it was in Aristotle's Athens or Dante's Florence: only the numbers and the institutional structures have changed.