day one

noun, often capitalized D&O

Definition of day one

: the first day or very beginning of something

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Examples of day one in a Sentence

We've known this about the project since Day One. since day one of this project, we've always insisted that we would create the best product possible without any consideration of cost
Recent Examples on the Web And according to his lawyer, that lack of outward emotion hurt Scott from day one. Jonathan Vigliotti, CBS News, "Will Scott Peterson, convicted of killing wife Laci and unborn child, get a new trial?," 1 May 2021 The safety of our citizens and community will be a key priority from day one., "Mount Airy election: Mayoral, Town Council candidates offer answers," 29 Apr. 2021 This creates cash-flow certainty and peace-of-mind from day one, and is the first step toward a lifetime relationship with the most valuable network of real-estate investors who have $3.7T under management. Nav Athwal, Forbes, "How To Be A Passive Landlord With Doorstead," 28 Apr. 2021 For Rogers, the collaboration’s potential was evident from day one. Janelle Okwodu, Vogue, "Target’s Latest Designer Collaboration Spotlights The Future of Fashion," 19 Apr. 2021 Chalk it up to basic risk aversion: Being able to lean on an existing feed offers some amount of guarantee and predictability around listenership right off the bat, which means that the publisher can sell ads against the show from day one. Nicholas Quah, Vulture, "Welcome (Back) to Depresh Mode," 13 Apr. 2021 Corbell, who was also named Class 2A Student-Achievement state winner, was born with a rare heart disease and had to fight for his life from day one. al, "Linden’s Josh Williams, Sulligent’s John Corbell capture 2021 Bryant-Jordan awards," 13 Apr. 2021 Housed in a building that Amoeba ownership bought at Sunset Boulevard and Cahuenga Avenue, Amoeba-Hollywood was a destination from day one — despite overall retail music sales plummeting at the time due to Napster. Randall Roberts, Los Angeles Times, "Lines around the block at Amoeba Music’s grand reopening in Hollywood," 1 Apr. 2021 My goal from day one has been to help the nation overcome vaccine hesitancy and to encourage people -- particularly people of color -- to trust the vaccines. Stephanie Elam, CNN, "Vaccine trial participant and CNN correspondent's big reveal. Was it the placebo or the real thing?," 23 Mar. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'day one.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of day one

1971, in the meaning defined above

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Time Traveler for day one

Time Traveler

The first known use of day one was in 1971

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Statistics for day one

Last Updated

7 May 2021

Cite this Entry

“Day one.” Dictionary, Merriam-Webster, Accessed 17 May. 2021.

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More Definitions for day one

day one


English Language Learners Definition of day one

: the first day or very beginning of something

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