How to use
used to mean someone or something of a type that has already been mentioned or is known about
'Have you got a camera?' 'No.' 'You should buy one'
buy a camera
The train was crowded so we decided to catch a later one
catch a later train
the one(s) (that/who/which)
The only jokes I tell are the ones that I hear from you.
this one/that one/these ones/those ones
I like all the pictures except this one.
used to mean someone or something from a group that has been mentioned or is about to be mentioned
The children seemed upset. One was crying.
This is one of my favourite books.
used to talk about a particular person or thing in comparison with other similar people or things
the men sounded furious,
She has two daughters.
is a primary school teacher,
the one(s) who/that
the person or people who
I was the one who had been attacked, not Richard.
The only ones
who will benefit are the shareholders.
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
One by one each soldier approached the coffin and gave a final salute.
one after another/one after the other
if events happen one after the other, they happen without much time between them
One after another, tropical storms battered the Pacific coastline.
(all) in one
if someone or something is many different things all in one, they are all those things
It's a TV, radio and VCR all in one.
used to mean people in general, including yourself
One can never be too careful.
Great pictures make one think.
This is a very formal use. People usually say or write
instead of 'one':
You can never be too careful.
I, for one, ...
used to emphasize that you believe something, will do something etc and hope others will do the same
I, for one, am proud of the team's effort.
... for one
used to give an example of someone or something
There were several other people absent that afternoon, weren't there? Mr Ashton for one.
be one up (on somebody)/get one up on somebody
to have or get an advantage over someone
put one over on somebody
to trick someone
No one's going to put one over on me!
be at one with somebody/something
to feel very calm or relaxed in the situation or environment you are in
She felt as she always did in these mountains: peaceful, without care,
at one with nature
to agree with someone about something
He was at one with Wheatley on the need to abandon free trade.
used in particular phrases to mean 'an alcoholic drink'
How about a
at the pub?
have had one too many
have drunk too much alcohol
(have) one for the road
have one last alcoholic drink before you leave a place
the one about ...
a joke or humorous story
Have you heard the one about
the chicken who tried to cross the road?
if many people do something as one, they all do it at the same time
The whole team stood up as one.
a difficult/hard/good etc one
a particular kind of problem, question, story etc
'What do you attribute your long life to?' 'Oh that's a difficult one'.
one and the same
the same person or thing
Muhammad Ali and Cassius Clay are one and the same.
not/never be one to do something
to never do a particular thing, because it is not part of your character to do it
Tom is not one to show his emotions.
not/never be (a great) one for (doing) something
to not enjoy a particular activity, subject etc
I've never been a great one for watersports.
one of us
used to say that someone belongs to the same group as you, or has the same ideas, beliefs etc
You can talk in front of Terry - he's one of us.
one and all
Apologies to one and all.
got it in one!
used to say that someone has correctly guessed or understood something immediately
'You're not painting the house again are you?' 'Got it in one!'
used by some people to mean 'children', especially young children
She's got four little ones.
you are/he is a one
used to say that someone's behaviour is amusing, strange or surprising
You are a one!
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
Dictionary results for "one"
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