to attire (oneself or another) in one's best clothes
to put fancy dress, disguise, etc, on (oneself or another), as in children's games
let's dress up as ghosts!
(tr) to improve the appearance or impression of
it's no good trying to dress up the facts
Wear formal or elaborate clothes, as in I love to dress up for a party . [Late 1600s] For the antonym, see dress down , def. 2.
Put on a costume of some kind, as in The children love dressing up as witches and goblins . [Late 1800s]
Adorn or disguise something in order to make it more interesting or appealing. For example, She has a way of dressing up her account with fanciful details . [Late 1600s]
First recorded in 1665–75; noun, adj. use of verb phrase dress up
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"The way the Brazilians dress up, they take it to a whole new level. There will still be a terrific atmosphere when we are together."
From BBC • Jun. 23, 2026
Now Sunday is a ritual: dress up, meet friends at the 10 a.m. or noon service, sometimes get brunch after.
From The Wall Street Journal • May 3, 2026
In reality, it’s a cover story people use to dress up views — like advocating teen pregnancy — they can’t argue for directly in public.
From Salon • Apr. 20, 2026
Weaver relishes the chance to dress up and embrace the glamour of the season.
From Los Angeles Times • Mar. 15, 2026
In middle school, you can’t dress up as a cartoon character or anything kindergarten like that.
From "Free Lunch" by Rex Ogle
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.
