number one

adjective

variants also No. 1
Definition of number onenext
1
as in main
coming before all others in importance considers international terrorism to be the number one threat to national security

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms
2
as in excellent
of the very best kind the company's chocolate is rated as number one by serious chocoholics

Synonyms & Similar Words

Antonyms & Near Antonyms

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 number one Talked about number one in the country a year ago and some of our championships. — Tom Green | [email protected], al, 15 Mar. 2023 And North Carolina, last year's runner up and this year's preseason number one, missed out entirely. — Taylor Wilson, USA TODAY, 13 Mar. 2023 Depositors and workers in the companies whose deposits are in that bank need to be job number one. — CBS News, 12 Mar. 2023 The number one priority in those situations is the health of the player. — Dalton Ross, EW.com, 2 Mar. 2023 See All Example Sentences for number one
Recent Examples of Synonyms for number one
  1. main
  2. excellent
  3. primary
  4. great
  5. predominant
  6. wonderful
  7. foremost
  8. terrific
Adjective
  • Also, the arena operates with one main kitchen; the hope is to have kitchens on all three levels to enhance fans’ concession experience.
    — Jason Quick, New York Times, 20 July 2026
  • Tourism – the island’s main economic lifeline – was down 58% in the first five months of 2026 compared with the year before.
    — The Week UK, TheWeek, 19 July 2026
Definition of main
Adjective
  • The roofline leaves enough headroom for actual adults, the cargo area is genuinely useful, and visibility remains excellent.
    — New Atlas, New Atlas, 20 July 2026
  • City Colleges of Chicago, the University of Illinois Chicago, Chicago State University and National Louis University, among others, have built their reputations on the premise that everyone deserves access to an excellent education.
    — Andrea Sáenz, Chicago Tribune, 20 July 2026
Definition of excellent
Adjective
  • Because, as a one-off measure, FIFA would not have been the primary beneficiary.
    — Henry Bushnell, New York Times, 21 July 2026
  • Detectives identified Stevenson Tuimavave as the primary suspect and obtained warrants for his arrest and a search of his home, police said.
    — Molly Gibbs, Mercury News, 21 July 2026
Definition of primary
Adjective
  • There are good footballers, there are great footballers and then there is Messi, who plays as if he has been sent here from another dimension, a superior life form inside the 5ft 7in frame of a normal guy from Rosario, Argentina.
    — Oliver Kay, New York Times, 19 July 2026
  • Healthcare's greatest crisis isn't financial or technological.
    — Sachin H. Jain, Forbes.com, 18 July 2026
Definition of great
Adjective
  • While summer is still the predominant season, the average acreage burned in winter, spring and fall have all increased too, according to the analysis.
    — Ignacio Calderon, USA Today, 16 July 2026
  • Repeated, large fires have caused a decline in the predominant species of conifers, the black spruce, shifting what vegetation regrows.
    — Joshua Partlow, The Atlantic, 16 July 2026
Definition of predominant
Adjective
  • There was something wonderful about the energy of the space—sprinkled with students diligently studying for final exams.
    — Dana Kravis, Condé Nast Traveler, 15 July 2026
  • The airline’s business class is well worth the splurge, thanks to the delicious food and beverage offerings, comfortable seats, innovative programs, and wonderful service on board.
    — Elizabeth Rhodes, Travel + Leisure, 14 July 2026
Definition of wonderful
Adjective
  • The executions have drawn attention to the ageing death-row population in the US, as well as Florida’s status as the foremost death penalty state.
    — Harriet Marsden, TheWeek, 16 July 2026
  • Among the most significant was the signing of a Letter of Intent between the Bharat Tex Trade Federation (BTTF) and Première Vision Paris, one of the world’s foremost textile and fashion sourcing platforms.
    — Mayu Saini, Footwear News, 15 July 2026
Definition of foremost
Adjective
  • The largest, the Koda Suite (named for Leo’s dog), which was once occupied by the Daunt family, is a terrific family option, with two rooms, two bathrooms, tons of space, and its own private pool entrance.
    — Condé Nast, Condé Nast Traveler, 15 July 2026
  • What’s far more eloquent is the episode with the witch Circe (a terrific Samantha Morton), whose habit of tricking and transforming men into animals is rendered in evocatively physical, body-horror-esque imagery.
    — Alison Willmore, Vulture, 15 July 2026
Definition of terrific

Browse Nearby Words

numberless
number one
numbers
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Cite this Entry

“Number one.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/number%20one. Accessed 23 Jul. 2026.

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