deck out

deck out

1. To dress in an especially extravagant manner. A noun or pronoun can be used between "deck" and "out." Wow, you sure got decked out for the party tonight! Maybe I should have worn something nicer than jeans.
2. To decorate something lavishly or elaborately. A noun or pronoun can be used between "deck" and "out." Wow, you really decked out the house for the party tonight—I've never seen so many Christmas lights in my life!
See also: deck, out
Farlex Dictionary of Idioms.

deck someone or something out (in something)

 and deck someone or something out (with something)
to decorate someone or something with something. Sally decked all her children out for the holiday party. She decked out her children in Halloween costumes. Tom decked the room out with garlands of flowers.
See also: deck, out
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

deck out

Decorate, dress up, as in They were all decked out in their best clothes. [Mid-1700s]
See also: deck, out
The American Heritage® Dictionary of Idioms by Christine Ammer.
See also:
  • angle
  • angling
  • not do (someone or oneself) any favors
  • (Is) this taken?
  • interpret for
  • interpret for (someone)
  • involve with
  • involve with (someone or something)
  • involved with
  • arrange some music for