day one

noun

often capitalized D&O
: the first day or very beginning of something

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Also featured on day one of this year’s event, in addition to Disney, have been studio Gaumont, independent production powerhouse Banijay, and more. Georg Szalai, HollywoodReporter, 30 Sep. 2025 The people-first approach is maintained through and through, as the goal from day one has been to pay producers what’s warranted, not dictated by the commodities market. Alexandra Harrell, Sourcing Journal, 30 Sep. 2025 The deal comes in the wake of the new Paramount announcing its first big project under Studio Co-Chairs Josh Greenstein and Dana Goldberg on day one, that being Mangold’s reteam with Timothée Chalamet, High Side. Anthony D'alessandro, Deadline, 30 Sep. 2025 For example, on a recent day one judge had ten people scheduled for hearings, but only two or three of them appeared in court, Zanaldi said. Sharon Bernstein, Sacbee.com, 29 Sep. 2025 See All Example Sentences for day one

Word History

First Known Use

1971, in the meaning defined above

Time Traveler
The first known use of day one was in 1971

Browse Nearby Words

Cite this Entry

“Day one.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/day%20one. Accessed 2 Oct. 2025.

Last Updated: - Updated example sentences
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