Source : Webster's Revised Unabridged Dictionary (1913)

Primarily \Pri"ma*ri*ly\, adv.
   In a primary manner; in the first place; in the first place;
   in the first intention; originally.

Source : WordNet®

primarily
     adv 1: for the most part; "he is mainly interested in butterflies"
            [syn: {chiefly}, {principally}, {mainly}, {in the main}]
     2: of primary import; "this is primarily a question of
        economics"; "it was in the first place a local matter"
        [syn: {in the first place}] [ant: {secondarily}]