day one

American  

noun

1. (often initial capital letters) the very first day or beginning of something.

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Etymology

Origin of day one

First recorded in 1975–80

Example Sentences

Other deals that should close in the next few months are Clearwater Analytics’ sale to a group of private money managers, Webster Financial’s sale to Banco Santander, Select Medical Holdings’ agreement to sell to a consortium of investors, Talkspace’s sale to Universal Health Service, Day One Biopharmaceuticals’ deal to tuck under French company Servier’s roof, and UniFirst’s sale to Cintas, just to name a handful.

From Barron's

“We recognized on day one that command-and-control was going to be our secret sauce,” Guetlein said at a recent industry conference.

From The Wall Street Journal

First, the Strait of Hormuz was effectively closed beginning Feb. 28, day one of the war.

From The Wall Street Journal

A huge component of “NCIS” that has remained consistent from day one is that it’s more than a case-of-the-week procedural.

From Los Angeles Times

He added: "From day one, I have been clear that Adlington was not a suitable site for this development, and I have worked tirelessly to ensure that message was heard at the highest levels of government."

From BBC

Related Words

• birth
• creation
• dawn
• inauguration
• inception
• introduction
• onset
• opening
• outset
• starting point
• top