#1 decorate v. [adorn, grace, ornament, embellish, beautify] make more attractive by adding ornament, colour, etc.; "Decorate the room for the party"; "beautify yourself for the special day". wn
#2 decorate v. [deck, adorn, grace, embellish, beautify] be beautiful to look at; "Flowers adorned the tables everywhere". wn
#3 decorate v. award a mark of honor, such as a medal, to; "He was decorated for his services in the military". wn
#4 decorate v. [dress] provide with decoration; "dress the windows". wn
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