日ひ一いち日にちと

expression, adverb

day by day; with each passing day

Emphasizes gradual change or progression over days. Often used in written or slightly formal contexts.

• 日ひ一いち日にちと春はるが近ちかづいているのを感かんじる。

  I feel spring approaching day by day.

• 彼かれの病びょう状じょうは日ひ一いち日にちと悪あっ化かしていった。

  His condition worsened with each passing day.