in costume

idiom

: wearing a costume

If all the actors are in costume, we're ready to begin.

The waiters were all in ancient Roman costume.

Examples of in costume in a Sentence

Recent Examples on the Web

Production began on the series in July, and HBO celebrated with the first picture of Dominic McLaughlin, who has inherited the role from Daniel Radcliffe, in costume as the titular wizard. —Julia Moore, PEOPLE, 23 Sep. 2025

Both children and parents are encouraged to visit in costume for non-scary activities and animal viewing. —Jim Higgins, jsonline.com, 19 Sep. 2025

For all you macabre-loving weirdos, HorrorHound Weekend is a great opportunity to meet other fans and industry professionals, participate in costume contests, get an autograph from a celebrity slasher and more. —Haadiza Ogwude, Cincinnati Enquirer, 10 Sep. 2025

Look out for medieval reenactments for which whole towns dress in costume, and religious processions where music is the soul of the streets. —Daniel Scheffler, Forbes.com, 28 Aug. 2025

Rhymes for in costume

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