DAY ONE Synonyms: 68 Similar and Opposite Words

day one

noun

Definition of day one

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

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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 Today’s live coverage of day one of the trial of Duane Keith Davis, who was indicted in 2023 in Tupac Shakur’s death, has ended. — Aditi Sangal, CNN Money, 17 Aug. 2026 The setup takes an API key configured as a request header, which is the same pattern used across professional developer tools, giving technical teams full control from day one. — Roy Stephen Canivel, Footwear News, 12 Aug. 2026 Pros Earns a competitive APY with no minimum balance required to earn the full rate, so your money works hard from day one. — Kelsey Neubauer, CNBC, 12 Aug. 2026 Standing in their way of another victorious night following the Freedom’s day one win over the Missouri Thunder was the New York Mavericks. — Ava Dicecca, Sun Sentinel, 9 Aug. 2026 See All Example Sentences for day one

Recent Examples of Synonyms for day one

Noun

Many of England’s players only arrived at their club’s pre-season camps at the beginning of August, three weeks after many sides saw the bulk of their squads return.

— George Edwards, New York Times, 18 Aug. 2026
Jurors were shown a photo of a green body bag at the beginning of her questioning, followed by a grisly photo of his body.

— CBS News, CBS News, 18 Aug. 2026

Definition of beginning

Noun

He was scheduled to throw over the weekend with El Paso but was held back after tweaking his back while working between starts.

— Jeff Sanders, San Diego Union-Tribune, 25 Aug. 2026
Then the Valkyries really pressed their advantage with a prolific scoring start to the fourth, pushing the lead to 14 points midway through the period.

— Christian Babcock, Mercury News, 25 Aug. 2026

Definition of start

Noun

In May, college graduates entering a workforce where the technology is the primary reason for job cuts met commencement speakers hailing the AI revolution—including former Google CEO Eric Schmidt at the University of Arizona—with boos.

— Jason Dressel, Fortune, 10 Aug. 2026
College students booed mentions of AI during commencement ceremonies this spring.

— Lisa Eadicicco, CNN Money, 10 Aug. 2026

Definition of commencement

Noun

Warming temperatures are also expanding the range of ticks and mosquitoes that carry diseases like West Nile virus, Lyme disease, dengue, chikungunya, alpha-gal syndrome, and others.

— Lorraine Boissoneault, STAT, 12 Aug. 2026
Earlier this year, astronomers with the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) created a different kind of 3D map using faint Lyman-alpha emission from hydrogen between galaxies.

— Samantha Mathewson, Space.com, 11 Aug. 2026

Definition of alpha

Noun

And while early-onset Alzheimer’s is rare, that doesn’t mean women should ignore changes that genuinely concern them.

— Lauryn Higgins, Flow Space, 19 Aug. 2026
Chronic absenteeism – referring to students who miss 10% or more days of the school year – has become one of the most urgent problems across American schools since the onset of the COVID-19 pandemic in 2020.

— Jerome A. Graham, The Conversation, 19 Aug. 2026

Definition of onset

Noun

The launch is the inaugural step in Shiseido’s bigger strategy of building a credible reputation in fragrances for Max Mara, as executives teased other launches are on the way.

— Sandra Salibian, Footwear News, 21 Aug. 2026
This is good energy for choosing a launch date, booking space, outlining a talk, or setting time for practice.

— Tarot.com, Chicago Tribune, 21 Aug. 2026

Definition of launch

Browse Nearby Words

day nursery

day one

day ones

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“Day one.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/day%20one. Accessed 25 Aug. 2026.

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Synonyms of day one

noun

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