day one

noun

variants often Day One
Synonyms of day onenext
: the first day or very beginning of something

Synonyms of day one

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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
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.
Midjourney, self-funded from day one, is estimated to generate around half a billion dollars annually with a team in the low hundreds. — Michael Wee, Forbes.com, 3 Aug. 2026 As usual, Game Pass Ultimate subscribers will also get access to it day one. — Fran Ruiz, Space.com, 2 Aug. 2026 Rather than fighting the process, Chelsea did their utmost to assist it from day one. — Simon Johnson, New York Times, 31 July 2026 The first two days were dominated by the defense, with the offense struggling with drops on day one and turnovers in Thursday’s practice. — Steven Johnson, Fort Worth Star-Telegram, 31 July 2026 See All Example Sentences for day one

Word History

First Known Use

1953, in the meaning defined above

Time Traveler
The first known use of day one was in 1953

Rhymes for day one

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Browse Nearby Words

day of the Lord
day one
day order
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Cite this Entry

“Day one.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/day%20one. Accessed 6 Aug. 2026.

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