eleventh hour

American  

noun

1. the last possible moment for doing something.

   to change plans at the eleventh hour.

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eleventh hour British  

noun

1. 1. the latest possible time; last minute

   2. ( as modifier )

      an eleventh-hour decision

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eleventh hour Cultural  

1. The last minute: “The water bombers arrived at the eleventh hour — just in time to prevent the forest fire from engulfing the town.”

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eleventh hour Idioms  

1. The latest possible time, as in We turned in our report at the eleventh hour. This term is thought to allude to the parable of the laborers (Matthew 20:1–16), in which those workers hired at the eleventh hour of a twelve-hour working day were paid the same amount as those who began in the first hour. [Early 1800s]

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Etymology

Origin of eleventh hour

First recorded in 1820–30