undoverb [ T ]
uk/ʌnˈduː/us/ʌnˈduː/present participle undoing, past tense undid, past participle undoneundo verb [ T ] (UNFASTEN)
B2 to unfasten something that is fastened or tied:
Can someone help me to undo my seat belt?
More examples
- I undid the buttons on my blouse.
- He had eaten so much that he had to undo his belt a couple of notches.
- He had undone the buttons of his shirt, exposing an unsightly expanse of white flesh.
- If the curtains are too short you could undo the hem to make them a bit longer.
- He gently began to undo the zip at the back of her dress.
Thesaurus: synonyms and related words
Unfastening and opening
- breaker
- crack
- let/set sth loose idiom
- loose
- loosen
- loosen your grip idiom
- open sb up
- pay (sth) out
- steam
- the earth/ground/floor opens idiom
- throw
- unbuckle
- uncap
- uncork
- undid
- unplug
- unroll
- unscrew
- untie
- unwind
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undo verb [ T ] (REMOVE EFFECTS)
B2 to remove the good or bad effects of an action or several actions:
I did a really tough aerobics class and then went out for dinner and undid (all) the good work!
It's very difficult to undo the damage that's caused by inadequate parenting in a child's early years.
Thesaurus: synonyms and related words
Destroying and demolishing
- annihilate
- apocalypse
- be sacrificed on the altar of sth idiom
- blast
- blast/blow sb/sth to kingdom come idiom
- fall in
- kill sth off
- kill the goose that lays the golden egg idiom
- knock
- knock sth down
- sacrifice
- sink
- smash
- stave
- stave sth in
- take sb/sth out
- tear 1
- tear sth apart
- tear sth down
- wipe
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