# asleep at the switch

idiom

Source: https://englishreference.com/idiom/asleep-at-the-switch
Updated: 2026-08-10

## Meaning

Neglectful of an important task, responsibility, or opportunity.

## Examples

- The manager was asleep at the switch during the crisis.
- You are asleep at the switch if you miss this great job offer.
- The project failed because the team leader was asleep at the switch and missed the deadline.
- The security guards were asleep at the switch when the protesters walked right through the main gates without being stopped.
- The board of directors realized the CEO had been asleep at the switch for months, allowing the company to drift toward bankruptcy without any oversight.

## Origin

Probably an allusion to the duties of a railway switchman, a figure responsible for the manual operation of track switches to prevent collisions. The expression suggests the consequences of a lapse in vigilance at the controls, though the specific era of its coinage remains unattested in the record. The image relies upon the high stakes of 19th-century rail transport, where a moment of literal slumber resulted in the catastrophic misdirection of a locomotive. (disputed)

---

From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.