undo

B1 Topic:Actions & Processes

US /ʌnˈduː/ See IPA manual

Freq #7915

Meanings

1

verb
To cancel or reverse something that has been done.

I wish I could undo what I said to her.
2

verb
To open or unfasten something that is tied, buttoned, or zipped.

Could you undo my buckle for me?
3

noun
An action that reverses your last step, especially on a computer.

How many undos does this program support?

Verb forms

Verb forms are not available for this word yet.

Thesaurus

Synonyms

1 verb · to cancel or reverse... cancel reverse

2 verb · to open or unfasten... unbuckle unbutton untieunziploosen

Opposites

button redo zip

Word family

Forms undidundoesundoingundoneundos

Etymology

From Middle English undōn, from Old English ondōn, from Proto-West Germanic *andadōn (“to undo”), equivalent to un- + do. Cognate with West Frisian ûndwaan, ûntdwaan (“to undo; rid”), Dutch ontdoen (“to undo”).

undōn Middle English ondōn Old English *andadōn Proto-West Germanic

View etymology graph ->

Topics

Actions & Processes

External links

# undo

**Type:** Word
**Level:** B1
**Part of speech:** verb, noun
**IPA (US):** /ʌnˈduː/
**Frequency rank:** 7915

## Meanings
1. To cancel or reverse something that has been done.
2. To open or unfasten something that is tied, buttoned, or zipped.
3. An action that reverses your last step, especially on a computer.

## Examples
- I wish I could undo what I said to her.
- Could you undo my buckle for me?
- How many undos does this program support?

## Antonyms
- button
- redo
- zip

## Roots and Affixes
- Root: undōn
- Root: ondōn
- Root: *andadōn
- Affix: un- - not

## Etymology
From Middle English undōn, from Old English ondōn, from Proto-West Germanic *andadōn (“to undo”), equivalent to un- + do. Cognate with West Frisian ûndwaan, ûntdwaan (“to undo; rid”), Dutch ontdoen (“to undo”).

## AI Etymology
Undo is from Middle English undōn, from Old English ondōn, from Proto-West Germanic *andadōn (“to undo”), equivalent to un- + do. Cognate with West Frisian ûndwaan, ûntdwaan (“to undo; rid”), Dutch ontdoen (“to undo”). The historical line also includes Middle English undōn, Old English ondōn, Proto-West Germanic *andadōn. In present-day use, it can mean to cancel or reverse something that has been done, or to open or unfasten something that is tied, buttoned, or zipped.

## Topics
- Actions & Processes

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