deck out
Verb
Meaning
put on special clothes to appear particularly appealing and attractive
Source: WordNetSynonyms
Antonyms
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Examples
Be not unwilling in what thou doest, neither selfish nor unadvised nor obstinate; let not over-refinement deck out thy thought; be not wordy nor a busybody.
She never dresses up, even when she goes to the opera
The young girls were all fancied up for the party
All you really need to do is invite over your friends and family, deck out your venue in red, white, and blue, and grill up some burgers and hot dogs.
Of course, you could also use it to deck out the Pixel 3a with a better case, a screen protector, and whatever other accessories suit your fancy.
I really wish Ms. hadn't decided to deck out the little boy in an odd mixture of "cowboy" clothes - checked shirt and - and a little feather headdress and bow and arrow set.