undone

¹ American  

[uhn-duhn] / ʌnˈdʌn /

adjective

1. not done; not accomplished or completed.

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undone ² American  

[uhn-duhn] / ʌnˈdʌn /

verb

1. past participle of undo.

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adjective

1. brought to destruction or ruin.

2. unfastened.

undone ¹ British  

/ ʌnˈdʌn /

adjective

1. ruined; destroyed

2. unfastened; untied

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undone ² British  

/ ʌnˈdʌn /

adjective

1. not done or completed; unfinished

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Etymology

Origin of undone¹

First recorded in 1250–1300; un- ¹ ( def. ) + done ( def. )

Origin of undone²

First recorded in 1300–50, for the adjective; un- ² ( def. ) + done ( def. )

Example Sentences

What if some of the mental decline linked to aging could actually be undone?

From Science Daily • May 26, 2026

To be sure, Congress can create new private property or contract rights that cannot be undone later because they are shielded by other parts of the Constitution.

From Slate • May 26, 2026

But give most robots a needle and thread, and they would probably come undone.

From BBC • May 18, 2026

And once the transfer to a private lender has been made, it can’t be undone.

From MarketWatch • May 15, 2026

It’s like my whole world is coming undone, but when I write, my pencil is a needle and thread, and I’m stitching the scraps back together.

From "Before We Were Free" by Julia Alvarez