# redo

/ɹiˈdu/ (US) · CEFR A2 · Verb

Source: https://englishreference.com/word/redo
Updated: 2026-05-07

## Definition

to do something again because you want to improve it or because the first time was not successful. You often use this when you make a mistake and need a fresh start.

For teachers: to perform an action or task a second time, typically to correct errors or achieve a superior result. Often implies a complete repetition rather than a minor adjustment.

## Examples

- I made a mistake on the form, so I had to redo it.
- The teacher asked the student to redo the assignment because the original work did not meet the requirements.
- After the software update caused a system crash, the design team had to redo several hours of unsaved work from their morning session.

## Pitfalls

- Not "I must to redo my homework." but "I must redo my homework." — Redo is a base verb; it follows modal verbs like 'must', 'can', or 'should' without the particle 'to'.

## Usage notes

- The verb is transitive and requires a direct object.

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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.