day-by-day

[ dey-bahy-dey ]
/ ˈdeɪ baɪˈdeɪ /

adjective

taking place each day; daily: a day-by-day account.

Origin of day-by-day

Middle English word dating back to 1350–1400

Idioms and Phrases with day by day

day by day

On each successive day, daily, as in Day by day he's getting better. Percy Bysshe Shelley used this expression, first recorded in 1362, in Adonais (1821): “fear and grief ... consume us day by day.”