expression, adverb
more than anyone; more than anybody
Used to emphasize that someone or something surpasses all others in a particular quality or action. Often followed by a verb or adjective.
See also: 何にも増して
彼は誰にも増して努力家だ。
He is more hardworking than anyone.
今年は誰にも増して早く桜が咲いた。
This year the cherry blossoms bloomed earlier than ever.
Means 'more than anything else', focusing on things rather than people.
From 誰に (to whom) + も (even) + 増して (surpassing, from 増す 'to increase'). Literally 'surpassing even anyone'.