day one

noun

Definition of day onenext
as in beginning
the point at which something begins since day one of this project, we've always insisted that we would create the best product possible without any consideration of cost

Synonyms & Similar Words

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Antonyms & Near Antonyms

Example Sentences

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.
Recent Examples of day one This World Cup has been bringing the absolute goods from day one. — Alejandro Avila Outkick, FOXNews.com, 2 July 2026 When clients are locked into multi-year contracts, a business buyer knows exactly what revenue is landing from day one. — Lien De Pau, Forbes.com, 1 July 2026 Every purchase also includes a strap, lock, air pump, and rearview mirrors, giving riders a complete package that's ready for the road from day one. — New Atlas, 2 July 2026 The siblings have been there for one another since day one—and Austin’s even been instrumental in masterminding some of his sister’s biggest moments. — Bailey Bujnosek, InStyle, 2 July 2026 See All Example Sentences for day one
Recent Examples of Synonyms for day one
  1. beginning
  2. start
  3. inception
  4. commencement
  5. alpha
  6. onset
  7. launch
Noun
  • Prior to the trial beginning, the judge agreed that questions about Brown’s felony conviction for his 2009 assault on then-girlfriend Rihanna would be barred from testimony.
    — Chris Willman, Variety, 1 July 2026
  • June was a frenetic month for the metro Atlanta restaurant scene, driven in part by a flurry of downtown openings timed to the beginning of the 2026 FIFA World Cup.
    — Olivia Wakim, AJC.com, 1 July 2026
Definition of beginning
Noun
  • Acuff got off to a much better start after struggling to make shots in his summer league debut on Saturday.
    — Jason Anderson, Sacbee.com, 7 July 2026
  • Belgium added to the lead early in the second half on a major error from goalie Matt Freese, who had given up just one goal in his first three starts.
    — Kevin Baxter, Los Angeles Times, 7 July 2026
Definition of start
Noun
  • Some team executives and agents have considered the second apron, set at just under $222 million this coming season, as a de facto hard cap since its inception.
    — Mike Vorkunov, New York Times, 4 July 2026
  • Since its inception, social media has been a proving ground for tween fashion and identity, offering under-16s a digital canvas to experiment with their style and form online cliques around niche interests.
    — Sophie Lou Wilson, Vogue, 2 July 2026
Definition of inception
Noun
  • Those commencement boos came from a young generation that has watched AI reframe entry-level work as inefficiency, seen generative content flood the visual landscape, and built their own creative identities through friction and craft.
    — Reid Litman, Fortune, 5 July 2026
  • There is a reason some students booed commencement speakers who mentioned AI this graduation season.
    — Dr. Diane Hamilton, Forbes.com, 4 July 2026
Definition of commencement
Noun
  • People living in states already known to have high levels of lone star ticks were much more likely to have evidence that they’ve already been bitten by a tick and exposed to alpha-gal.
    — Erika Edwards, NBC news, 2 July 2026
  • The category leans heavy on alpha and beta hydroxy acids, the same actives doing the work on your face just packaged for bigger surface area.
    — Lauren Jarvis-Gibson, Sacbee.com, 30 June 2026
Definition of alpha
Noun
  • The three-year war erupted at the onset of the collapse of Yugoslavia, with Bosnia and Herzegovina becoming one of the first countries to declare its independence from the country in 1992.
    — Idaho Statesman, Idaho Statesman, 2 July 2026
  • The abnormal heat has been driven by the onset of El Niño, a natural climate pattern characterized by unusually warm waters along the equatorial tropical Pacific Ocean.
    — Laura Paddison, CNN Money, 1 July 2026
Definition of onset
Noun
  • The approach was already working, even before any formal launch.
    — Sydney Lake, Fortune, 3 July 2026
  • During the demonstration, three trucks were aligned and mechanically connected to form a continuous launch platform.
    — Prabhat Ranjan Mishra, Interesting Engineering, 3 July 2026
Definition of launch

Browse Nearby Words

day nursery
day one
day ones
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Cite this Entry

“Day one.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/day%20one. Accessed 7 Jul. 2026.

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