undo Meaning & Definition
What Does Undo Mean?
Undo is used as a verb meaning To reverse the effects of an action. It can also mean To unfasten. As a noun, it means An operation that reverses a previous action. As an adjective, it means Misspelling of undue.
Undo at a Glance
| Part of speech | verb, noun, adjective |
|---|---|
| Pronunciation | //ʌnˈduː// |
| Syllables | 1 |
| Synonyms | unmake |
| Antonyms | make and do |
| Plural | undos |
| Verb forms | undoes, undoing, undid, undone |
Undo Definition (Verb)
- To reverse the effects of an action.
Fortunately, we can undo most of the damage to the system by the war.
- To unfasten.
Could you undo my buckle for me?
- To unfasten the clothing of (a person).
- To impoverish or ruin, as in reputation; to cause the downfall of.
Undo as a Noun
- An operation that reverses a previous action.
How many undos does this program support?
Undo as an Adjective
- Misspelling of undue.
Synonyms of Undo
Undo synonyms and antonyms →Antonyms of Undo
Undo in a Sentence
Fortunately, we can undo most of the damage to the system by the war.
What's done can't be undone.
Could you undo my buckle for me?
How many undos does this program support?
Word Forms & Grammar
undo (third-person singular simple present undoes, present participle undoing, simple past undid, past participle undone)
undo (plural undos)
undo
Words That Rhyme With Undo
Origin of Undo
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”).
Undo Pronunciation
You say undo as //ʌnˈduː//. It has 1 syllable.
Common Questions About Undo
Is undo a verb or a noun?
Undo is mainly used as a verb, but it can also be used as a noun and an adjective.
What is another word for undo?
Close synonyms of undo are unmake. See the full list of undo synonyms and antonyms.
What is the plural of undo?
The plural of undo is undos.
What is the past tense of undo?
The past tense of undo is undid and the past participle is undone. The present participle is undoing.