The Collaborative International Dictionary of English v.0.48:

Ultimately \Ul"ti*mate*ly\, adv.
   As a final consequence; at last; in the end; as, afflictions
   often tend to correct immoral habits, and ultimately prove
   blessings.
   [1913 Webster]

WordNet (r) 3.0 (2006):

ultimately
    adv 1: as the end result of a succession or process; "ultimately
           he had to give in"; "at long last the winter was over"
           [syn: ultimately, finally, in the end, at last,
           at long last]

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "ultimately":
   as things go, as times go, at bottom, at last, at length,
   at long last, at the end, at the last, basically, conclusively,
   essentially, eventually, finally, fundamentally, in conclusion,
   in due course, in due season, in due time, in fine, in time, last,
   lastly, once for all, someday, sometime, somewhere,
   sooner or later, yet