costume

1 of 3

noun

cos·​tume ˈkä-ˌstüm 

-ˌstyüm

also -stəm

or

ˈkäs-ˌchüm 

1

: the prevailing fashion in coiffure, jewelry, and apparel of a period, country, or class

2

: an outfit worn to create the appearance characteristic of a particular period, person, place, or thing

Halloween costumes

3

: a person's ensemble of outer garments

especially : a woman's ensemble of dress with coat or jacket

costumey adjective

costume

2 of 3

verb

cos·​tume kä-ˈstüm 

-ˈstyüm

also

käs-ˈchüm 

or

ˈkä-ˌst(y)üm 

or

ˈkäs-ˌchüm 

or -stəm

costumed; costuming

transitive verb

1

: to provide with a costume

2

: to design costumes for

costume a play

costume

3 of 3

adjective

cos·​tume ˈkä-ˌstüm 

-ˌstyüm

also -stəm

or

ˈkäs-ˌchüm 

1

: characterized by the use of costumes

a costume ball

a costume drama

2

: suitable for or enhancing the effect of a particular costume

a costume handbag

Synonyms of costume

Noun

• dress
• clothes
• attire
• garb
• outfit

Verb

• dress
• clothe
• attire
• gown
• garment
• apparel

Examples of costume in a Sentence

Noun

children in their Halloween costumes

a formal 18th-century Japanese costume

Verb

the days when people, costumed in their Sunday best, would parade along the grand avenue on Easter

Adjective

You're invited to a costume party!

Recent Examples on the Web

Noun

There will be bands performing traditional and contemporary Greek music and youth dance troupes in traditional folk costumes along with a kids fun zone, church tours and vendor shopping. —Abby Hamblin, San Diego Union-Tribune, 10 June 2026

April Ferry, the show’s Emmy-winning costume designer, said her team used natural materials like cotton, linen, silk and wool to create more than 4,000 costumes, each custom-dyed on set at Cinecittà Studios in, naturally, Rome. —Lisa De Los Reyes, HollywoodReporter, 10 June 2026

Verb

The show also figured out better than any show in recent memory how to adapt itself for a TV broadcast, with the kitties, as costumed by Tony winner Qween Jean, flitted all over the Radio City Musical Hall in New York, this year’s venue for the ceremony. —Chris Jones, Chicago Tribune, 8 June 2026

Mance went on to praise his stars Paul Anthony Kelly (who played Kennedy) and Sarah Pidgeon (who played Bessette) for their endless willingness to participate in the costuming process. —Christian Zilko, IndieWire, 8 June 2026

Adjective

For their imaginative daring, co-directors Zhailon Levingston and Bill Rauch were justly honored as were costume designer Qween Jean and choreographers Omari Wiles and Arturo Lyons, among the production’s notable awards. —Theater Critic, Los Angeles Times, 8 June 2026

So that was kind of cool to get basically a flip side of a costume coin. —Destiny Jackson, Deadline, 26 May 2026

Word History

Etymology

Noun

French, from Italian, custom, dress, from Latin consuetudin-, consuetudo custom — more at custom

First Known Use

Noun

1668, in the meaning defined at sense 1

Verb

1802, in the meaning defined at sense 1

Adjective

1800, in the meaning defined at sense 1

Phrases Containing costume

• bathing costume
• costume drama
• costume jewelry
• in costume
• national costume
• swimming costume

Rhymes for costume

• assume
• backroom
• ballroom
• barroom
• bathroom
• bedroom
• boardroom
• bridegroom
• classroom
• cloakroom
• consume
• courtroom

Kids Definition

costume

1 of 2 noun

cos·​tume ˈkäs-ˌt(y)üm 

1

: the style of clothing, ornaments, and hair characteristic of a certain period, region, or class

ancient Roman costume

peasant costume

2

: special or fancy dress (as for wear on the stage or at a masquerade party)

3

: a person's outer clothing

costume adjective

costume

2 of 2 verb

costumed; costuming

: to provide with a costume