one

noun
UK: /wʌn/
US: /wʌn/

  1. The number 1.

    1. One plus one is two. [ ] [ ]
    2. Only one person can win this competition, so give it your best shot. [ ] [ ]

  2. A single person or thing.

    1. I need one more pen. [ ] [ ]
    2. Finding one good reason to stay is enough to change my mind quickly. [ ] [ ]

  3. Used to refer to any person.

    1. One should always be polite. [ ] [ ]
    2. If one wishes to succeed, one must be prepared to work hard every day. [ ] [ ]

Synonyms

individual unique single
one adjective

  1. Used to refer to a particular thing or person that has already been mentioned or is easily identified.

    1. This is a good car, but that one is better. [ ] [ ]
    2. Which book do you want? The red one or the blue one located there? [ ] [ ]

  2. Single; individual.

    1. They arrived one by one. [ ] [ ]
    2. Each one of us has a responsibility to protect the environment today. [ ] [ ]
one adverb

  1. Used to emphasize how strongly you feel about something.

    1. One day, I will travel there. [ ] [ ]
    2. One way or another, we will find a solution for it together here. [ ] [ ]

Frequently Asked Questions

The word "one" in English means: The number 1., A single person or thing., Used to refer to any person..

The phonetic transcription of "one" is /wʌn/ in British English and /wʌn/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "one": individual, unique, single.

Example usage of "one": "One plus one is two.". More examples on the page.