|Noah Webster's Dictionary|
(adv.) In a brilliant manner.
Brilliantly (2 Occurrences)
Revelation 17:4 The woman was clothed in purple and scarlet, and was brilliantly attired with gold and jewels and pearls. She held in her hand a cup of gold, full of abominations, and she gave filthy indications of her fornication. (WEY)
Revelation 18:16 weeping aloud and sorrowing, and saying, 'Alas, alas, for this great city, which was brilliantly arrayed in fine linen, and purple and scarlet stuff, and beautified with gold, jewels and pearls; (WEY)