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# undo

«undo» in Mova's school dictionary: **to turn something back to how it was before** — its meaning for a pupil, its sense in the lessons and examples, with 5 sentences of Mova's corpora that use it.

### part of speech

verb (undo, undoes, undid, undone, undoing)

### meaning for a pupil

1) To undo is to turn something back to how it was before. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/U/undo/#m1)

2) To undo is to open something that is tied or fastened, like a knot, a button or a zip. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/U/undo/#m2)

3) On a computer, Undo cancels the last thing you did. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/U/undo/#m3)

### sense in the lessons

one operation reverses another: dividing undoes multiplying, adding undoes taking away; to find a starting amount, undo each change; phrases: «undo a knot», «undo a button», «press undo»

### examples

- Dividing undoes multiplying: 3 × 4 = 12, so 12 ÷ 3 = 4. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/U/undo/#x1)
- Adding 5 undoes taking 5 away. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/U/undo/#x2)
- To find the start, undo each change. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/U/undo/#x3)
- Can you undo this knot in my shoelace? [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/U/undo/#x4)
- Undo your top button if you feel hot. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/U/undo/#x5)
- Press undo to bring back the deleted word. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/U/undo/#x6)
- You cannot undo a mean word once it is said. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/U/undo/#x7)
- Subtracting 7 undoes adding 7. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/U/undo/#x8)
- But he could not undo the string. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/U/undo/#x9)

### note

Past: undid; past participle: undone. Use the undoing operation to check an answer or to find a starting amount. Pairs that undo each other: + and −, × and ÷.

### In the corpora

- [Correcting a rumour you passed on helps undo the harm.](https://md.mova.elamur.ai/free/en/corpora/school/everyday/202-rumours-and-gossip/18/)
- [Climbing on statues, monuments and museum displays leads to falls on hard floors and damage that cannot be undone.](https://md.mova.elamur.ai/free/en/corpora/school/everyday/224-quiet-places-and-solemn-moments/20/)
- [A sweet can't undo a sore head.](https://md.mova.elamur.ai/free/en/corpora/school/everyday/380-maddie-and-chloes-plaits/7/)
- [Can it be undone easily?](https://md.mova.elamur.ai/free/en/corpora/school/everyday/439-cruel-pranks-and-where-the-line-is/8/)
- [Good April jokes are silly and quick to undo.](https://md.mova.elamur.ai/free/en/corpora/school/everyday/440-april-fools-day/9/)

### Trees and pragmatics

[Every meaning and example of «undo» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/U/undo/), each sentence with its dependency tree and frames.