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 House District 100 deserves a representative who is ready to lead on day one. — Chris Vincent, Sun Sentinel, 20 July 2026 On the 72 nights of group stage matches, host cities saw declines in occupancy 44 times, compared to the same day one year earlier. — Miami Herald, 17 July 2026 Don’t expect your kid to get the hang of it on day one, and don’t force them to execute their routine perfectly every morning, without any fuss or pushback. — Parents, 17 July 2026 Instead, seasoned cruisers seek out the alternatives most passengers don’t realize are open on day one—smaller cafes, grills, or, occasionally, a main dining room for a quiet, sit-down meal. — Kristy Tolley, Travel + Leisure, 17 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
  • Asking how your home will be promoted, and whether it will be listed in the MLS from the very beginning, can help ensure your property has the strongest possible start.
    — Heartland MLS®, Kansas City Star, 22 July 2026
  • The Bundesliga had only begun in 1963, marking the true beginning of professionalism.
    — James Pearce, New York Times, 22 July 2026
Definition of beginning
Noun
  • Blake Snell has just started a rehab assignment and is multiple starts away from returning to the rotation after surgery to remove bone chips from his left elbow.
    — Fabian Ardaya, New York Times, 21 July 2026
  • Seven of those games were starts, and one outing came after Hart opened the Padres’ July 2 game at Dodger Stadium.
    — Kevin Acee, San Diego Union-Tribune, 20 July 2026
Definition of start
Noun
  • The city has issued roughly 60,000 zero-fine warnings since the program’s inception, in addition to warnings issued during grace periods at the start of the program, according to the data.
    — A.D. Quig, Chicago Tribune, 19 July 2026
  • Missouri farmers have implemented more than 295,000 conservation practices since its inception in 1984, which the Department of Natural Resources says stopped more than 194 million tons of soil from erosion.
    — Jack Harvel, Kansas City Star, 18 July 2026
Definition of inception
Noun
  • The students booing artificial intelligence at commencements across the country are not just worried about jobs.
    — Mark Bardeen Andrejevic, Washington Post, 10 July 2026
  • Bill Clinton, who was giving that day’s commencement address, praised El-Sayed in his own remarks.
    — Jason Zengerle, New Yorker, 10 July 2026
Definition of commencement
Noun
  • Most mammals—but not humans—contain alpha gal, so someone with alpha-gal syndrome will likely have an allergic reaction to consuming meat from cows, pigs, lambs, goats, and deer.
    — Alice Park, Time, 23 July 2026
  • But Saxon’s goal to get Lochlan laid and turn him into an alpha-male only further complicates their relationship.
    — Brianna Zigler, Entertainment Weekly, 23 July 2026
Definition of alpha
Noun
  • The Mayo Clinic states that early-onset Alzheimer’s disease is a rare form of dementia that affects people younger than age 65.
    — Gina Kalsi, PEOPLE, 22 July 2026
  • The movie houses closed at the onset of the pandemic in 2020.
    — Gary Baum, HollywoodReporter, 21 July 2026
Definition of onset
Noun
  • Submissions for the inaugural DARCYS opened June 16 and closed July 14, and the ceremony’s afterparty will double as the launch of the HRTS Access Leadership Award, with a nomination process to be announced separately.
    — Keely Cat-Wells, Forbes.com, 18 July 2026
  • Skyroot Aerospace successfully launched its Vikram-1 rocket to low Earth orbit (LEO) early Saturday morning (July 18), making India just the third country with a private orbital launch capability.
    — Mike Wall, Space.com, 18 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 24 Jul. 2026.

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