# err on the side of caution

idiom

Source: https://englishreference.com/idiom/err-on-the-side-of-caution
Updated: 2026-08-10

## Meaning

To act in the least risky manner in a situation in which one is uncertain about the consequences.

## Examples

- I will err on the side of caution and take an umbrella.
- Since the weather report is uncertain, it is better to err on the side of caution and cancel the outdoor event.
- In the absence of clear data, the committee decided to err on the side of caution, opting for a conservative investment strategy to protect their long-term assets.

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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.