so much so that

so much so that

To such an extent or large degree that. The interest rates on the loan were exorbitantly high—so much so that I had to start selling things around the house to meet my monthly payments.
See also: much, that

ˌso much ˈso that

to such an extent that: His nose wouldn’t stop bleeding — so much so that we had to take him to hospital.
See also: much, that