In the nick of time

Arriving or acting just before it's too late, at the critical last moment when delay would mean failure or disaster. It conveys urgency and relief, suggesting a narrow escape from trouble, often with a dramatic flair.

From 16th-century England, 'nick' meant a notch or mark, often on a tally stick to track time or debts. 'In the nick' originally meant 'at the precise mark,' as in Chaucer's 1386 use for exactness. By the 1580s, it paired with 'time' in texts like a 1610 sermon, meaning just as the moment struck. The phrase evolved with clocks and deadlines, gaining its modern sense of last-second triumph by the 19th century, rooted in a culture obsessed with punctuality.