The Collaborative International Dictionary of English v.0.48:

emphatically \em*phat"ic*al*ly\, adv.
   1. With emphasis; forcibly; in a striking manner or degree;
      pre["e]minently; as, he emphatically denied the
      allegations.
      [1913 Webster]

            He was indeed emphatically a popular writer.
                                                  --Macaulay.
      [1913 Webster]

   2. Not really, but apparently. [Obs.] --Sir T. Browne.
      [1913 Webster]

WordNet (r) 3.0 (2006):

emphatically
    adv 1: without question and beyond doubt; "it was decidedly too
           expensive"; "she told him off in spades"; "by all odds
           they should win" [syn: decidedly, unquestionably,
           emphatically, definitely, in spades, by all odds]

Moby Thesaurus II by Grady Ward, 1.0:

56 Moby Thesaurus words for "emphatically":
   absolutely, abundantly, acutely, affirmatively, amazingly, amply,
   assertively, astonishingly, awesomely, conspicuously, copiously,
   decidedly, declaratively, eminently, exceptionally, exquisitely,
   extraordinarily, exuberantly, famously, generously, glaringly,
   impressively, incredibly, intensely, magically, magnanimously,
   magnificently, markedly, marvelously, nobly, notably, particularly,
   peculiarly, pointedly, positively, predicatively, preeminently,
   profusely, prominently, pronouncedly, remarkably, richly, signally,
   singularly, splendidly, strikingly, superlatively, surpassingly,
   surprisingly, uncommonly, under oath, unusually, with emphasis,
   wonderfully, wondrous, worthily