Source : Webster's Revised Unabridged Dictionary (1913)

Insomuch \In`so*much"\, adv.
   So; to such a degree; in such wise; -- followed by that or
   as, and formerly sometimes by both. Cf. {Inasmuch}.

         Insomusch as that field is called . . . Aceldama.
                                                  --Acts i. 19.

         Simonides was an excellent poet, insomuch that he made
         his fortune by it.                       --L'Estrange.

Source : WordNet®

insomuch
     adv : to such an extent or degree; so