vice

Vice comes from Latin vitium, a word used in Rome by the 1st century BCE for fault, defect, blemish, or moral failing. The earliest sense was not pure wickedness. A thing, an omen, or a person could have vitium if it was flawed. The moral sense grew from the broader notion of defect.

As Latin moved into Gallo-Romance, vitium changed shape and produced Old French vice by the 11th century. In French it could mean fault, moral failing, or depravity. English borrowed vice in the 13th century. The word entered a moral world already alert to sins, habits, and corrupt dispositions.

Medieval English sharpened vice against virtue, making the pair feel almost architectural. Sermons, plays, and moral treatises used vice for entrenched bad conduct rather than a single mistake. Late medieval drama even personified Vice as a tempting or mocking figure. The word became social and theatrical as well as ethical.

Modern English often uses vice for an immoral habit, especially one repeated until it shapes a life. That strong sense comes from centuries of moral contrast, but the old root still whispers defect and flaw. A vice is not merely forbidden pleasure in etymological terms. It is a bent or fault that has taken hold.