one


Definition: Meaning of, one in English to English dictionary.

Pronunciation: / wʌn /

  • number
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  1. the number 1
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  2. one or two a small number of people or things [=  a few]
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  3. in ones and twos British English alone or in pairs, rather than in large numbers or groups
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  • pronoun
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Word Forms:
Singular Plural
one ones
  1. used to mean someone or something of a type that has already been mentioned or is known about
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  2. used to mean someone or something from a group that has been mentioned or is about to be mentioned
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  3. used to talk about a particular person or thing in comparison with other similar people or things
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  4. the one(s) who/that the person or people who
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  5. one by one used when one person or thing in a group does something, then the next, then the next, especially in a regular way
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  6. one after another/one after the other if events happen one after the other, they happen without much time between them
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  7. (all) in one if someone or something is many different things all in one, they are all those things
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  8. formal used to mean people in general, including yourself
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  9. I, for one, ... used to emphasize that you believe something, will do something etc and hope others will do the same
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  10. ... for one used to give an example of someone or something
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  11. be one up (on somebody)/get one up on somebody to have or get an advantage over someone
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  12. put one over on somebody informal to trick someone
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  13. be at one with somebody/something to feel very calm or relaxed in the situation or environment you are in
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  14. be at one with somebody/something formal to agree with someone about something
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  15. informal used in particular phrases to mean 'an alcoholic drink'
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  16. the one about ... spoken a joke or humorous story
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  17. as one written if many people do something as one, they all do it at the same time
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  18. a difficult/hard/good etc one a particular kind of problem, question, story etc
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  19. one and the same the same person or thing
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  20. not/never be one to do something informal to never do a particular thing, because it is not part of your character to do it
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  21. not/never be (a great) one for (doing) something informal to not enjoy a particular activity, subject etc
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  22. one of us spoken used to say that someone belongs to the same group as you, or has the same ideas, beliefs etc
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  23. one and all old-fashioned or formal everyone
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  24. got it in one! British English spoken used to say that someone has correctly guessed or understood something immediately
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  25. little/young ones spoken used by some people to mean 'children', especially young children
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  26. you are/he is a one British English old-fashioned used to say that someone's behaviour is amusing, strange or surprising
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  • determiner
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  1. used to emphasize a particular person or thing
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  2. one day/morning/year etc on a particular day, morning etc in the past
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  3. one day/morning/year etc used to talk about a day, morning etc in the future which is not yet exactly known or decided
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  4. used to talk about a particular person or thing in comparison with other similar people or things
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  5. It's one thing to ... it's (quite) another to used to say that the second thing mentioned is very different from the first, and is often much more difficult to do
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  6. for one thing used to introduce a reason for what you have just said
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  7. be one crazy woman/be one interesting job etc spoken especially American English to be a very crazy woman, be a very interesting job etc
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  8. formal used before the name of someone you do not know or have not heard of before [=  a certain]
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  • adjective
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Word Forms:
Positive Comparative Superlative
N/A N/A N/A
[only before noun]
  1. only
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  2. one and only used to emphasize that someone is very famous
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  3. one and only used to emphasize that something is the only one of its kind
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  • noun
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Word Forms:
Singular Plural
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[countable usually plural] [American English]
  1. a piece of paper money worth one dollar
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one used in phrases

  • A-one (adjective)
    1. of the highest quality
  • Air Force One
    1. the name of the plane that the US President uses
  • Formula One
    1. the highest level of international car racing. Formula One cars are special, very fast cars that compete for the world championship by taking part in a series of important races, called "Grand Prix", in several countries.
  • One Hundred and One Dalmatians
    1. (1961) a CARTOON film made by Walt DISNEY,, about 99 young DALMATIAN s which an evil woman called CRUELLA DE VIL wants to kill so that she can use their skins to make a coat. Two more adult Dalmatians save them. Another film was made of the story in 1996 with human actors.The films are based on the book by Dodie Smith.
  • Thousand and One Nights (noun)
    1. a collection of folktales in Arabic dating from the 10th century
  • Thousand and One Nights, the
  • all in one go
    1. achieved in one single event or action
  • all-in-one (adjective)
    1. combining two or more things that are usually separate into one thing
  • at one fell swoop
    1. achieved in one single event or action
  • at one time (adverb)
    1. simultaneously
    2. at a previous time
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