number one Meaning in the Cambridge English Dictionary Cambridge dictionaries logo

Meaning of “number one” in the English Dictionary

"number one" in British English

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number onenoun [U]

uk   us  
  • number one noun [U] (YOURSELF)

(US also numero uno) informal yourself and no one ​else: Frank is ​completelyselfish - he only ​cares about ​number one. I'm going to look out fornumber one (= take ​care of myself only).
(Definition of number one from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"number one" in American English

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number onenoun [C]

 us   /ˈnʌm·bər ˈwʌn/
the ​best or ​highestrankingperson or thing: She’s still number one in ​tennis.
(Definition of number one from the Cambridge Academic Content Dictionary © Cambridge University Press)

"number one" in Business English

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number onenoun [U]

uk   us  
informal the ​person or thing that is the best or has the most important ​position in an ​organization, ​group, ​market, etc.: They ​ran an ​aggressiveadvertisingcampaign as ​part of their ​plan to become ​number one in the UK ​market. Sustainable ​success is our number one ​priority.
(Definition of number one from the Cambridge Business English Dictionary © Cambridge University Press)
Translations of “number one”
in Chinese (Simplified) 自己…
in Chinese (Traditional) 自己…
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“number one” in British English

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