1.PronounA particular amount, often a large or excessive amount.
"How could you eat so much?; There is only so much you can remember.; I've got so much to do, but so little time."
2.PronounA demonstrated amount.
""So much," he replied, sprinkling a small pile of the powder on the table."
3.AdverbTo a certain degree or extent
"Identical twins are so much alike, it is difficult to identify them.; I feel so much better.; It wasn't so much that I don’t want to, but I just didn't have the time."
4.AdjectiveTo such a quantity, degree etc.
"There has been so much snow, I can't open the door."