How to spell undo

Undo is spelled U-N-D-O.

hear itun·do/ən'du/verbPrefixes and work

What it means: To cancel an action.

In a sentence: You can click the button to undo your last action.

Same family: did, done, doing, redo, overdo. If you can spell one, the shared part carries to the others.

Where it comes from: “Undo” comes from Old English “undōn,” meaning to open, unfasten, or reverse an action. The prefix “un-” has been used for over a thousand years in English to show reversal, as in “untie,” “unpack,” and “uncover.”

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Words like this

unsure · unsafe · unlock · unkind · uncover

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