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 Despite their promises to lower the high cost of living on day one. — Leila Fadel, NPR, 6 Nov. 2026 All of this is a cheaper investment on day one than at any point after. — Leslie Ellis, Forbes.com, 6 Nov. 2026 These are all things that are going to need to be thoroughly investigated as part of our pledge to hold the crooks accountable, beginning on day one. — Lauren Peller, ABC News, 4 Nov. 2026 Regardless of how thoughtlessly Rainbeau might be acting, Rosa has had it out for her since day one. — Rafaela Bassili, Vulture, 3 Nov. 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
  • Except Moe is nice, caring, and talented, while Matt is arrogant, unpleasant, and, at the beginning of the episode, belligerently drunk.
    — Rafaela Bassili, Vulture, 10 Nov. 2026
  • Still, gas prices remain up by more than 30% since the war with Iran started on February 28, and around 40% since the beginning of the year.
    — Elizabeth Robinson, NBC news, 10 Nov. 2026
Definition of beginning
Noun
  • Hemphill says doing the main pruning in spring prevents winter damage to tender young shoots and gives them a clean start for the new season.
    — The Spruce, The Spruce, 8 Nov. 2026
  • Méndez finished his first regular season with six goals and four assists in 14 appearances with 10 starts.
    — ABC News, ABC News, 7 Nov. 2026
Definition of start
Noun
  • From inception that tour’s financial sensibilities were wack — $100 million, $200 million, $300 million signing bonuses before a stroke was played.
    — Los Angeles Times, Los Angeles Times, 7 Nov. 2026
  • Since its inception, in 2019, the torrid band Sweeping Promises has been a project about the act of creating.
    — Hilton Als, New Yorker, 6 Nov. 2026
Definition of inception
Noun
  • The ceremony’s main commencement speaker, former President Clinton, was moved by the five-minute address, too.
    — Preston Fore, Fortune, 5 Nov. 2026
  • Chiefs fans have been unhappy with kicker Harrison Butker for his uneven success the previous two seasons, as well as that viral commencement speech at Benedictine College.
    — Pete Grathoff, Kansas City Star, 28 Oct. 2026
Definition of commencement
Noun
  • There was a struggle for power, as both men wanted to be the dominant alpha in their videos, and each had his own ideas about how to achieve those goals.
    — Barry Levitt, Time, 12 Nov. 2026
  • These are healthy fats that support heart health and include eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), found in seafood, while alpha-linolenic acid (ALA) is found in plants.
    — Lana Barhum, Verywell Health, 8 Nov. 2026
Definition of alpha
Noun
  • This is a movie about selective memory, centered on a fortysomething film director named Shinpei (Kato Shinsuke) whose career has been prematurely halted by early-onset dementia.
    — Katie Rife, IndieWire, 2 Nov. 2026
  • Researchers from McGill University in Canada and the University of Leicester in the United Kingdom enrolled 96 adults between the ages of 18 and 45 who were living with obesity and early-onset type 2 diabetes.
    — Khloe Quill, FOXNews.com, 2 Nov. 2026
Definition of onset
Noun
  • At launch, MTPeak withheld the performance and price tag details, using the excuse that the final cost will depend on individual customization.
    — New Atlas, New Atlas, 7 Nov. 2026
  • Inside the classified mission USSF-432 is part of a series of national security launches associated with the Space Force.
    — Aamir Khollam, Interesting Engineering, 7 Nov. 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 14 Nov. 2026.

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