Source : Webster's Revised Unabridged Dictionary (1913)

Substantially \Sub*stan"tial*ly\, adv.
   In a substantial manner; in substance; essentially.

         In him all his Father shone, Substantially expressed.
                                                  --Milton.

         The laws of this religion would make men, if they would
         truly observe them, substantially religious toward God,
         chastle, and temperate.                  --Tillotson.

Source : WordNet®

substantially
     adv 1: to a great extent or degree; "I'm afraid the film was well
            over budget"; "painting the room white made it seem
            considerably (or substantially) larger"; "the house
            has fallen considerably in value"; "the price went up
            substantially" [syn: {well}, {considerably}]
     2: in a strong substantial way; "the house was substantially
        built"