- taking place each day; daily: a day-by-day account.
Origin of day-by-day
Middle English word dating back to 1350–1400
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
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.”
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.