# do one's homework

idiom

Source: https://englishreference.com/idiom/do-ones-homework
Updated: 2026-08-10

## Meaning

To prepare oneself with the relevant knowledge; to carry out the necessary research in advance.

## Examples

- You should do your homework before you buy a new car.
- If you want to succeed in this job interview, you need to do your homework on the company first.
- The journalist spent weeks doing her homework, carefully reviewing every document before she finally published the investigative report.

---

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.