# make sure that

idiom · CEFR A2

Source: https://englishreference.com/idiom/make-sure-that
Updated: 2026-04-22

## Meaning

To check something to be certain it is true, or to take action so you can be certain of a result.

## Examples

- Please make sure that you lock the door.
- I will call the hotel to make sure that they have our reservation for tonight.
- The project manager double-checked the data to make sure that every calculation was accurate before presenting the final report to the board.

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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.