# lightning fast

idiom

Source: https://englishreference.com/idiom/lightning-fast
Updated: 2026-08-10

## Meaning

Extremely fast, fast as lightning.

## Examples

- The new computer is lightning fast.
- The delivery driver was lightning fast, arriving at my door only ten minutes after I placed the order.
- With a lightning fast reaction, the goalkeeper lunged across the net to stop the ball from entering the goal.

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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.