Word Study
initially
CIDE DICTIONARY
initially, adv.
In an initial or incipient manner or degree; at the beginning. Barrow. [1913 Webster]
THESAURUS
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, principallyFor further exploring for "initially" in Webster Dictionary Online