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

But thanks to a thoroughly discredited British doctor who claimed to document changes in behavior in children given the MMR vaccine, creating the so-called “Wakefield effect,” some of this progress has been undone.

From Salon • Apr. 8, 2026

We’ve worked hard for 18 years to instill a strong work ethic and teach budgeting skills, and I don’t want to see that undone.

From MarketWatch • Mar. 26, 2026

A kitchen cabinet had come undone, and I needed a bracket and some glue to piece it back together.

From The Wall Street Journal • Mar. 12, 2026

Eric Musselman sat behind a microphone at the bitter end of a bitter regular season for USC, armed only with the same explanations for how a once-hopeful season could come so undone.

From Los Angeles Times • Mar. 8, 2026

He straightened his shoulders, placed the crystal snowdrop in the top buttonhole of his coat, now undone.

From "Stardust" by Neil Gaiman