number one

English · Français

AI In plain words

Writing a short explanation…

Written by a house AI from the entry below, in your language. The entry itself is the source.

number one¹

Where it comes from

Piecewise doublet of numero uno.

adjective

  1. idiomatic, not comparable First; foremost; best, often used after its headword. Commuting to work is the number one reason to own a car.
  2. US, not comparable, slang Black, African-American.

noun number ones

  1. The most important person, the one who is in charge.
  2. Someone who is top of a ranking, who is ranked first. The phone rings, in the middle of the night / My father yells "what you gonna do with your life" / Oh, daddy, dear, you know you're still number one / But girls, they wanna have fun / Oh, girls just wanna have...
  3. Oneself, being considered foremost, as by an egoist. No man should have more than two attachments—the first, to number one, and the second to the ladies; that's what I say—ha! ha!
  4. childish, euphemistic Urine; urination. He might have got up, without the bell's sounding, to do his number one, or number two, in his great big white chamber-pot.
  5. The single that has sold the most in a given period.
  6. The main goalkeeper of a team, so-called because they wear the number 1 on the back of their kit. England number one Hart produced a magnificent moment to deny Van Persie once more just after the hour mark, leaping across his goal to fingertip the Dutchman's crashing 25-yard, top corner-bound drive away.
  7. The batsman who opens the batting.
  8. A first lieutenant.
  9. A large town where theatrical performances may expect to achieve success.
  10. Used other than figuratively or idiomatically: see number, one.

Number One²

proper noun

  1. A locality in the MidCoast council area, eastern New South Wales, Australia.

Translations

Every language

adj first, foremost, best

한국어넘버원 neombeowon
日本語ナンバーワン nanbā wan
中文頭號 /头号 tóuhào
Tiếng Việtsố một

noun someone who is in charge

日本語ナンバーワン nanbā wan
Русскийгла́вный glávnyj, ста́рший stáršij

noun top-ranking person

Françaisnuméro un
Русскийгла́вный glávnyj, гла́вное лицо́ glávnoje licó

noun urine or urination euphemism

Españolaguas menores
日本語小 shō
हिन्दीपेशाब peśāb, मूत mūt, मूत्र mūtra
Kiswahilihaja ndogo
Portuguêsnúmero um
Françaispetite commission
Ελληνικάψιλό psiló
Русскийма́лое де́ло máloje délo, ма́лая нужда́ málaja nuždá, по-маленькому po-malenʹkomu

Talk about this word

Cite this
MLA

"number one." Wiktionary, via Micwyn, micwyn.com/word/number%20one. Accessed 6 Nov. 2026.

APA

number one. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/number%20one

Chicago

"number one." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/number%20one.

BibTeX
@misc{number_one_2026,
  title = {number one},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/number%20one},
  urldate = {2026-11-06}
}