day one

The very start

Day one means the very beginning—the first day of an endeavor, project, or experience.

The phrase emphasizes being present or involved from the earliest possible moment: I've been with this company since day one, We had problems from day one.

It often carries pride in early involvement or suggests that something was true from the start.

Related

clean slate · zero hour · origin · starting point · ground floor · founding · genesis · do-over · inauguration · inception · debut · commencement · launch · kickoff · tabula rasa · blank page · dawn · first light

Categories
Opposites
temporal sequence position

day onethe end

Final point of something

conclusion · finale · last day · endgame · final day

experience/familiarity

day oneold hand

Experienced person

veteran status · seasoned pro · veteran · old-timer · lifer

project lifecycle stage

day onewind-down

Gradual transition to rest

end of the road · sunsetting · phase-out · final stretch · post-mortem

Family

one, day, holiday, today, everyday, days, midday, yesterday, birthday

Familiarity
Top 20,000
Profile
Known to kids · Used worldwide · Timeless · Positive · Everyday, not technical · Rated G