last minute
Synonym discussion
Sense: noun/1
All three expressions describe something happening very close to a deadline, but they differ in tone and usage. 'Last minute' is the most neutral and common, used in everyday speech for ordinary deadlines and plans. 'Eleventh hour' is more dramatic and formal, often appearing in news or storytelling about crises or narrow escapes ('an eleventh-hour rescue'). 'Nick of time' is slightly informal and always used with 'in the' — it emphasises that something happened just before it was too late, often with a positive outcome ('He arrived in the nick of time'). Choose 'last minute' for general use, 'eleventh hour' for dramatic effect, and 'nick of time' for a lucky near-miss.
Etymology
The phrase 'last minute' has been used since the early 1700s to mean the final moment before a deadline or event. It combines 'last' (from Old English 'latost', meaning 'final') and 'minute' (from Latin 'minuta', meaning 'small portion of time'). The expression became especially common in the 19th century as clocks and schedules became part of everyday life.
First known use
1653
1653, in the meaning defined above