insomuch

alternative obsolete in so much

1. not comparableBecause of; since; as a result of.

   Insomuch as you have consistently paid the bill on time before, we'll excuse one late payment.

2. not comparableTo the extent that.

   In ſo moche that if any verbe be of the thyꝛde coniugation / I ſet out all his rotes and tenſes[…]

   1530 July 18, Iohan Palſgrave, “The Introduction”, in Leſclarciſſement de la langue francoyſe […] , London: Richard Pynſon, Iohan Haukyns, →OCLC, page 32; reprinted as Lesclarcissement de la langue françoyse, Genève: Slatkine Reprints, 1972

   1 more example

   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.

   1712 August 31 (Gregorian calendar), [Joseph Addison; Richard Steele et al.], “WEDNESDAY, August 21, 1712”, in The Spectator, number 463; republished in Alexander Chalmers, editor, The Spectator; a New Edition, […], volume V, New York, N.Y.: D[aniel] Appleton & Company, 1853, →OCLC