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to undo

to undo

21 1.3
Unfasten something that is tied or fastened
  • verb
  • /ʌnˈdu/
translation icon : desabrochar
  • I'm going to have to undo these clips here.
  • undo the button
  • undo your belt
  • undo the knot

I guess let's just kind of undo these bins and see what's inside.

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Examples

Synonyms

to untie
vsto undo
91 1.0

Make a knot or lace loose by undoing it

includes knots but also other tied or covered items
to loosen
vsto undo
88 1.0

Make something less tight so it can move or open

focuses specifically on releasing fastenings or coverings too
to unhook
vsto undo
35 2.5

To take something off where it hangs, like a coat or necklace

covers hooks but also knots, ties, and coverings
to unbutton
vsto undo
22 1.0

Undo the buttons on a piece of clothing

includes buttons but also other fastenings and wraps
to unzip
vsto undo
19 1.3

Open clothes or bags by pulling the small piece of the zipper

applies to zippers but also to other fastening types
to unwrap
vsto undo
15 1.0

To take off paper or cloth that covers a gift

is broader and also covers undoing ties and fastenings
to unbuckle
vsto undo
11 3.2

Undo the part that holds a belt or strap closed

covers buckles but also other ties and coverings
to unwind
vsto undo
5 3.7

Make a wrapped or twisted thing loose and straight

is more general, not limited to wound objects
to unfasten
vsto undo
5 3.4

To open something by undoing a button or zipper

is broader, doing this for ties, covers, or wraps
to unstrap
vsto undo
4 3.9

To take off a belt or band that holds something in place

is broader and applies beyond straps alone
to unbind
vsto undo
3 6.4

To free something by untying ropes or cords

is more general, covering many fastening types and coverings
to unlace
vsto undo
3 3.8

To untie strings that close shoes or clothing

is more general and applies beyond laces
to untwist
vsto undo
2 3.7

To make something that is twisted become straight

focuses more widely on opening or unfastening items
to unsnap
vsto undo
1 4.2

Open something that closes with a small button, like a purse or jacket

is general and includes snaps as one fastening type
to unpin
vsto undo
1 4.1

To take a pin out so something is no longer attached

is broader, including pins as one of many fastenings
to unbraid
vsto undo
1 7.1

To take apart hair or thread that is twisted together

is broader, covering ties, fastenings, and coverings too
to uncuff
vsto undo
1 7.7

To let down the folded edge of a sleeve or pant leg

is more general, covering various ties, fastenings, and coverings
to unbelt
vsto undo
1 8.1

Open or take off the strap that holds a piece of clothing at the waist

covers belts specifically but also other tied or fastened items
to unknot
vsto undo
1 5.1

To make a tied rope or string loose so it comes apart

is broader and includes knots plus other fastenings or covers
to unpick
vsto undo
1 6.4

To remove stitches from fabric by taking out the thread

is broader and includes unfastening beyond sewn items
to unstitch
vsto undo
1 6.3

To pull out the thread used to join pieces of cloth or close a cut

is broader and covers many types of unfastening actions
to untack
vsto undo
8.4

To pull small nails or pins out of something

is broader and applies to many other fastenings
to unloose (a) knot
vsto undo
  • Archaic
5.9

To untie a knot so it comes apart

is general and applies beyond knots to other fastenings
to unsew
vsto undo
8.4

To remove stitches from cloth or clothing

is more general and applies to non-sewn fastenings too
to untuck
vsto undo
  • Specialized
6.0

To take out stitches from a folded part of clothing to make it looser

is broader, covering general unfastening and uncovering
to unknit
vsto undo
8.0

To undo a sweater or other item made from yarn to reuse the yarn

is more general and includes knots, ties, and covers
to undrape
vsto undo
8.6

To take cloth coverings off something to show it

is more general, applying to coverings and fastenings alike
to unrein
vsto undo
9.9

To take the reins or other ties off something so it can move

is broader and applies to many restraint and cover types

Antonyms

68 1.6

Hold something in place so it cannot move

How Loosened

to undo
21 1.3
to untie
91 1.0
to unfasten
5 3.4
to loosen
88 1.0
to unclip
6 3.7

Surface Forms

undo infinitive
undoing present participle
undoes third person singular
undid past
undone past participle

Morphology

undo = do (transparent) = un + do

The sense 'loosen or unfasten' is a reversal of the fastening sense of 'do' (as in 'do up'), so the negative prefix 'un-' on 'do' yields an interpretable meaning for learners.

Etymology

Undo is made of un- ('reverse') and do, which gives the image of doing the opposite, like untying a knot. So to undo your seatbelt or buttons is to loosen or unfasten them.