day one
Americannoun
Etymology
Origin of day one
First recorded in 1975–80
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
On another day, one courtroom had 96 people scheduled at the same time.
From Los Angeles Times • Jul. 1, 2026
The company operates through residential, luxury, commercial, and new-development divisions, all of which will be active in Texas from day one.
From MarketWatch • Jul. 1, 2026
That they hung in this game - first with two wickets with the final two balls of day one, then by dominating the second day - is to their immense credit.
From BBC • Jun. 26, 2026
It is like having an assistant directly reporting to you on day one, not in decade two.
From The Wall Street Journal • Jun. 21, 2026
Kaede could have chastised her, for their teachers at the Academy had taught them from day one that such a display of power was reckless.
From "Huntress" by Malinda Lo
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
