above all else; more than anything
Emphasizes that something is the most important or valued among all things. Often used with expressions of feeling, desire, or priority.
Above all else, health is the most important.
He loves his family more than anything.
Standard kanji-kana mixed spelling.
Kana spelling of 増して; common in everyday writing.
From 何 (what) + に (particle) + も (inclusive particle) + 増して (te-form of 増す, to increase), literally 'even more than what', meaning 'more than anything'.