Insomuch

Inˊso-much′

,

adv.

So; to such a degree; in such wise; – followed by that or as, and formerly sometimes by both. Cf.

.

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.

,

adv.

[in,so, and much.] So that; to that degree.

Simonides was an excellent poet,insomuch that he made his fortune by it.

[This word or combination of words is not deemed elegant, and is obsolescent, at least in classical composition.]

insomuch ‎(not comparable)

Because of; since; as a result of.
Insomuch as you have consistently paid the bill on time before, we'll excuse one late payment.
To the extent that.
- Addison
  These weights did not exert their natural gravity […] insomuch that I could not guess which was light or heavy whilst I held them in my hand.