initially

from WordNet (r) 3.0 (2006)

initially
    adv 1: at the beginning; "at first he didn't notice anything
           strange" [syn: {initially}, {ab initio}]

from The Collaborative International Dictionary of English v.0.48

Initially \In*i"tial*ly\, adv.
   In an initial or incipient manner or degree; at the
   beginning. --Barrow.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

19 Moby Thesaurus words for "initially":
      ab initio, ab ovo, aborigine, at first, at the start,
      before everything, chiefly, first, first and foremost, first thing,
      firstly, from the beginning, in the beginning, mainly, originally,
      primarily, primitively, primo, principally

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