expression
even more than; still more than
Used to emphasize that something exceeds a comparison point, often with a nuance of 'even more so' or 'still more'. Typically follows a noun or clause marked by より.
彼は兄よりもまだ背が高い。
He is even taller than his older brother.
この問題は前回よりもまだ難しい。
This problem is even more difficult than the last one.