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Region: General | Usage example: He burned the midnight oil finishing the grant proposal before the deadline.

Burn the midnight oil

Meaning

Work late into the night.

Usage

Used to describe dedication when preparing for exams, launches, or urgent tasks.

Origin & History

Origin notes can vary by region and source; this page gives the commonly reported explanation and usage context.

Refers to working by the light of an oil lamp after dark.

Recorded in the 17th century, reflective of scholars studying after sunset long before electricity.