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day one

The very beginning.

ˈdeɪ ˈwʌnCurrent110 viewsLast reviewed Jun 29, 2026+ Add a definition
🗺️ Regional & Other
3 definitions
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10 citations · last seen May 2026

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#1·Apr 27, 2026

The very beginning.

I've been with the project since day one.
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#2·Apr 27, 2026

At the very beginning; when something is entirely new.

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  • “Me too, sadly mostly by Pippa Crerar, I was reminded the other the day the head of the DPP when the outcome Operation Elveden meant many journalists were prosecuted was one Keir Starmer. Pure coincidence that he's faced a hostile press since day one, I don't think so.”

to buy something day one
Heard in the wild
  • “Sprinter's guide to #Plone 7 🏃 Heading to the Beethoven Sprint? @sneridagh.dev runs a fast-paced 101 on Plone 7 architecture so you can hack from day one. 📅 Wed May 6 — 16:00 CEST / 14:00 UTC / 11:00 BRT 📺 www.youtube.com/watch?v=iyfP... #OSS #React”

    — Bluesky· May 2026
  • “Most landlords don’t realise they’re missing key compliance documents… until there’s a problem.Avoid the stress. Stay organised from day one.👉 https://www.circledoors.com/compliance-library #uklandlords #propertycompliance”

    — Bluesky· May 2026
  • “Me too, sadly mostly by Pippa Crerar, I was reminded the other the day the head of the DPP when the outcome Operation Elveden meant many journalists were prosecuted was one Keir Starmer. Pure coincidence that he's faced a hostile press since day one, I don't think so.”

    — Bluesky· May 2026
  • “No Phil. It’s a world of uncertainty and human failings. Failings which of course you don’t suffer from because you’re infallible and if only you were in charge the country would be paradise on earth from day one.”

    — Bluesky· May 2026
  • “Last minute surprise! 𝗠𝗢𝗧𝗢𝗥𝗦𝗟𝗜𝗖𝗘 is coming day one to Xbox Game Pass 🔥 Superb!”

    — Bluesky· May 2026
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#3·Apr 27, 2026

(US, slang) A close, longtime friend, one who has been around since the beginning.

Heard in the wild
  • “Cowardice. Day one in office should have been gutting the power of media owners. Force the ownership of major news outlets to be as widely dispersed as possible, with UK tax residency required for all shareholders. And make knowingly spreading lies a criminal offence.”

    — Bluesky· May 2026
  • “if they make me ceo i'll do this day one”

    — Bluesky· May 2026
  • “Dia dhuit le Baile Átha Cliath 🇮🇪 Day one of our #ENDURANCE Plenary is underway in Dublin! Kicking off with key updates and discussions across project work packages. Looking forward to two productive days focused on strengthening disruption resilience across Europe. 🇪🇺”

    — Bluesky· May 2026
  • “Every Jotform submission shouldn't mean manually checking Canvas Medical and updating a record. 📋 Your intake-to-EHR flow - fully automated from day one. 👉 Run it free: buff.ly/uwlpZ89 #HealthcareAutomation #CanvasMedical #Jotform #PatientIntake #NoCode #HIPAACompliant”

    — Bluesky· May 2026
  • “Film: A Quiet Place: Day One (2024) [PG-13] Studio: Paramount Pictures Character: Unknown Actor: Unknown Director: Michael Sarnoski Screenwriter: Michael Sarnoski Timestamp: 0:12:52 cinematicfbombs.com/2024/12/03/2...”

    — Bluesky· May 2026
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