The Collaborative International Dictionary of English v.0.48:

Magnificently \Mag*nif"i*cent*ly\, adv.
   In a Magnificent manner.
   [1913 Webster]

WordNet (r) 3.0 (2006):

magnificently
    adv 1: extremely well; "he did splendidly in the exam"; "we got
           along famously" [syn: excellently, magnificently,
           splendidly, famously]
    2: in an impressively beautiful manner; "the Princess was
       gorgeously dressed" [syn: gorgeously, splendidly,
       resplendently, magnificently]

Moby Thesaurus II by Grady Ward, 1.0:

65 Moby Thesaurus words for "magnificently":
   abundantly, acutely, amazingly, amply, astonishingly, awesomely,
   conspicuously, copiously, divinely, elaborately, elegantly,
   eminently, emphatically, exceptionally, exquisitely,
   extraordinarily, extravagantly, exuberantly, famously, generously,
   glaringly, gloriously, grandiosely, grandly, immensely, imposingly,
   impressively, incredibly, intensely, luxuriously, magically,
   magnanimously, majestically, markedly, marvelously, nobly, notably,
   particularly, peculiarly, pointedly, preeminently, profusely,
   prominently, pronouncedly, proudly, remarkably, richly, signally,
   singularly, splendaciously, splendidly, splendiferously,
   strikingly, sumptuously, superbly, superlatively, surpassingly,
   surprisingly, terrifically, tremendously, uncommonly, unusually,
   wonderfully, wondrous, worthily