[noun] + にも増して
Common nouns: 以前、去年、前、昨年、何より、いつ
にも増して (にもまして) is a formal expression meaning "even more than" or "more than ever." It is used to emphasize that something surpasses a previous level, expectation, or point of comparison. The expression derives from ます増す (to increase), and the て form here connects to the main clause, indicating that the degree or extent goes beyond what is referenced.
One of the most common uses is to express that something is more than before or more than ever, often paired with words like いぜん以前、きょねん去年、 or まえ前 to establish the baseline.
It can also compare one thing to another, expressing that something exceeds the comparison target in some quality.