# look out

idiom

Source: https://englishreference.com/idiom/look-out
Updated: 2026-08-10

## Meaning

To be vigilant and aware often as an imperative to alert a person to danger.

## Examples

- Look out, there is a car coming.
- You should look out for ice on the road while you are driving tonight.
- The guide warned the hikers to look out for loose rocks along the steep mountain path.

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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.