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Synonyms

dud

American  
[duhd] / dʌd /

noun

  • duds
    plural
  1. Informal. a device, person, or enterprise that proves to be a failure.

    Synonyms:
    flop, bomb, fizzle, debacle, fiasco
  2. a shell or missile that fails to explode after being fired.


dud British  
/ dʌd /

noun

  1. a person or thing that proves ineffectual or a failure

  2. a shell, etc, that fails to explode

  3. old-fashioned (plural) clothes or other personal belongings

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. failing in its purpose or function

    a dud cheque

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms


Etymology

Origin of dud

1815–25; special use of dud, singular of duds


Explanation

Something that doesn't work the way it's supposed to is a dud. A bomb or firework that doesn't explode is one kind of dud. A bad blind date is another kind. When a bomb fails to explode, it's a dud. A long-planned surprise party that fails miserably when the guest of honor doesn't show up is another kind of dud. You can also refer to a person as a dud, if they're an utter failure or a complete flop: "The lead actor was a total dud. He couldn't really sing or dance and he seemed nervous." In the 1800s, a dud was "a person in ragged clothing," from dudde, "cloak or mantle."

Keep Reading on Vocabulary.com

Vocabulary lists containing dud

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Despite Lauer’s bounce-back start Wednesday, and a consistent run with the Dodgers other than a dud against the Cubs at Wrigley Field last week, Lauer’s future with this team down the stretch isn’t entirely clear.

From Los Angeles Times ● Aug. 13, 2026

To no one’s surprise, it was a dud.

From Salon ● Aug. 1, 2026

But no, we can confidently report that the Great American State Fair is a big ol’ dud.

From Slate ● Jul. 1, 2026

It’s the first day of SpaceX trading, and Wall Street has high hopes it’ll provide a lot more excitement than that dud of a World Cup opener.

From MarketWatch ● Jun. 12, 2026

According to the newspaper, SmartMart’s grand opening was a big old dud.

From "Hope Springs" by Jaime Berry

Costume designer Maya Edmond dresses Big Ant thematically: white tees when he’s trying to be good, black duds when his demons are winning and comic book-y jailbird stripes during his pivotal teenage arrest.

From Los Angeles Times ● Sep. 11, 2026

With years of data showing that people will rent and watch just about anything, Netflix was free to make a home for all the bombs and duds that it previously offered via snail mail.

From Salon ● Sep. 2, 2026

Splurging money on last-minute loans who, surprisingly, turn out to be duds.

From BBC ● Aug. 19, 2026

The truly remarkable thing about Harden’s duds is that they didn’t even come close to registering as the worst postseason outings of his career.

From The Wall Street Journal ● Apr. 28, 2026

Large numbers of the shells fired were duds; they failed to detonate.

From "The War to End All Wars: World War I" by Russell Freedman

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