lucrum

Lucrum in Latin meant profit, gain, advantage. It was morally neutral. Cicero used it without embarrassment. Roman merchants spoke of lucrum the way a modern accountant speaks of revenue. The word likely derives from an older root shared with Greek apolauo (to enjoy) and may connect to a Proto-Indo-European root meaning 'to seize' or 'to gain.' In classical Latin, lucrum was simply what you earned.

The word's moral contamination came through the Vulgate, Jerome's fourth-century Latin translation of the Bible. In 1 Timothy 3:8 and Titus 1:7, Jerome used turpe lucrum — 'shameful gain' — to translate the Greek aischrokerdes. The King James translators in 1611 rendered this as 'filthy lucre.' The phrase stuck with a force that Jerome could not have anticipated. Two English words fused into a near-permanent compound.

By the seventeenth century, 'filthy lucre' had become a fixed expression. Writers used it seriously, then ironically, then humorously. Benjamin Franklin played with it. Mark Twain mocked it. The phrase became so common that lucre alone began to sound dirty — the adjective had permanently stained the noun. Try saying 'lucre' without hearing 'filthy' before it. The collocation is almost involuntary.

Modern English has dozens of words for profit: revenue, earnings, income, return, yield, proceeds, gain. None of them carry moral weight. Lucre is the only English word for money that arrives pre-judged. A neutral Latin accounting term became, through one Bible verse and one memorable translation, a word that cannot shake its adjective.