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Synonyms

day one

American  

noun

  1. (often initial capital letters) the very first day or beginning of something.


Etymology

Origin of day one

First recorded in 1975–80

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Investors should remember they don’t have to buy all the stock they want at any price on day one.

From Barron's • Jun. 8, 2026

After 16 wickets fell on day one, another 17 came on Friday on a devilishly difficult surface for batting - an alarming amount of uneven bounce has been added to the sideways movement.

From BBC • Jun. 5, 2026

And so Robinson and England were once again set on convergent paths, culminating in his comeback for the ages on day one of the first Test against New Zealand.

From BBC • Jun. 4, 2026

I nodded, but I’d have been lying if I said I hadn’t come for the lynx—or pretended that the distant views through the scope on day one had been entirely satisfying.

From The Wall Street Journal • May 30, 2026

The next day one of Jamison’s errand boys woke me out of a sound sleep in my vast bed at the Horse and Four.

From "The Name of the Wind" by Patrick Rothfuss

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