いちにちもはやく
as soon as possible; without further delay
Expression, Adverb
弟おとうとは一日いちにちも早はやく借金しゃっきんを返かえすべく、昼ひるも夜よるも必死ひっしで働はたらいている。
My younger brother is working very hard day in and day out in order to pay the debt.