Definition of "so much"

so much

pronoun
1. A particular amount, often a large or excessive amount.
  Quotations
  We tiptoed into the house, up the stairs and along the hall into the room where the Professor had been spending so much of his time.
  1913, Joseph C. Lincoln, chapter 13, in Mr. Pratt's Patients
2. A demonstrated amount.
adverb
not comparable
1. To a certain degree or extent
adjective
not comparable
1. To such a quantity, degree etc.