Thesaurus

day one

noun

Synonyms & Antonyms of day one

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 for day one

Words Related to day one

Near Antonyms for day one

Antonyms for day one

See the Dictionary Definition 

Keep scrolling for more

Learn More about day one

Time Traveler for day one

Time Traveler

The first known use of day one was in 1971

See more words from the same year

Cite this Entry

“Day one.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/day%20one. Accessed 27 Sep. 2020.

More from Merriam-Webster on day one

Dictionary: Definition of day one

Comments on day one

What made you want to look up day one? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!