The Collaborative International Dictionary of English v.0.48:

Effectively \Ef*fect"ive*ly\, adv.
   With effect; powerfully; completely; thoroughly.
   [1913 Webster]

WordNet (r) 3.0 (2006):

effectively
    adv 1: in an effective manner; "these are real problems that can
           be dealt with most effectively by rational discussion"
           [syn: efficaciously, effectively] [ant:
           ineffectively, inefficaciously]
    2: in actuality or reality or fact; "she is effectively his
       wife"; "in effect, they had no choice" [syn: effectively,
       in effect]

Moby Thesaurus II by Grady Ward, 1.0:

52 Moby Thesaurus words for "effectively":
   ably, adequately, advantageously, ardently, capably, cogently,
   competently, conveniently, dynamically, effectually, efficiently,
   eloquently, energetically, expressively, fervently, fluently,
   forcefully, forcibly, functionally, glibly, glowingly, graphically,
   handily, impressively, in glowing terms, meaningfully, mightily,
   passionately, potently, powerfully, practically, productively,
   profitably, serviceably, smoothly, spiritedly, strikingly,
   tellingly, to advantage, to good account, to good effect,
   to good purpose, to good use, to profit, usefully, vehemently,
   vigorously, vividly, warmly, well, with a vengeance,
   with telling effect