costume
Americannoun
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a style of dress, including accessories and hairdos, especially that peculiar to a nation, region, group, or historical period.
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dress or garb characteristic of another period, place, person, etc., as worn on the stage or at balls.
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fashion of dress appropriate to a particular occasion or season.
dancing costume; winter costume.
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a set of garments, especially women's garments, selected for wear at a single time; outfit; ensemble.
verb (used with object)
adjective
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of or characterized by the wearing of costumes.
a costume party.
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meant for use with or appropriate to a specific costume.
costume accessories.
noun
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a complete style of dressing, including all the clothes, accessories, etc, worn at one time, as in a particular country or period; dress
national costume
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old-fashioned a woman's suit
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a set of clothes, esp unusual or period clothes, worn in a play by an actor or at a fancy dress ball
a jester's costume
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short for swimming costume
verb
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to furnish the costumes for (a show, film, etc)
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to dress (someone) in a costume
Related Words
See dress.
Other Word Forms
Etymology
Origin of costume
1705–15; < French < Italian: usage, habit, dress; doublet of custom
Explanation
A costume is a set of clothes you wear when you want to dress up like another person. You might wear a witch's costume to go trick-or-treating on Halloween, or put on a George Washington costume to reenact a scene from the American Revolution in a play. A costume is a set of clothes that is unique to a particular person or time period. If you were starring as Dorothy in your neighborhood production of The Wizard of Oz, your costume would consist of a blue-and-white checkered dress and ruby slippers. On the other hand, if you were starring as Lady Godiva, you wouldn't need much of a costume at all!
Vocabulary lists containing costume
Party Parlance for Mardi Gras
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October Words
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Reading: Literature - Drama - Introductory
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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.
Ms. Colker choreographs the singers as well as the dancers, creating a visual movement that matches the flow of Ms. Frank’s music, just as the set and costume colors echo its luxuriant hues.
From The Wall Street Journal • May 18, 2026
Images on social media showed a person scaling the fence in a costume that included a smiley face head with sunglasses, prompting the monkeys to scatter.
From Barron's • May 18, 2026
A video posted on Disney’s social media showed the actor in full costume, then lifting his helmet to reveal himself.
From Los Angeles Times • May 18, 2026
Jordan said almost as soon they arrived, one of them, Will, who was dressed as rapper Soulja Boy "but had a gun for some reason", came up to him to ask about his costume.
From BBC • May 15, 2026
Ms. Zelda tugged the mouse costume over Nancy's feet, which were covered with pink ballet tights.
From "The Cinderella Ballet Mystery: Nancy Drew and the Clue Crew, #4" by Carolyn Keene
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.