# pop up

idiom

Source: https://englishreference.com/idiom/pop-up
Updated: 2026-08-10

## Meaning

To appear without warning.

## Examples

- New problems often pop up at the worst time.
- I was almost finished with my report when a technical error decided to pop up on my screen.
- Unexpected complications continued to pop up throughout the project, forcing the team to constantly adjust their strategy to meet the deadline.

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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.