(of two or more things) corresponding exactly
first-class ; first-rate ; superior
Speakers and writers use one's to indicate that something belongs or relates to people in general, or to themselves in particular .
If a group of people does something as one, all the people do the same thing at the same time or in the same way.
in a state of agreement or harmony
You can use in one to indicate that something is a single unit, but is made up of several different parts or has several different functions.
No one means not a single person, or not a single member of a particular group or set.
having or having scored an advantage or lead over someone or something
all the same
a thousand dollars
If something happens from day one of a process, it happens right from the beginning. If it happens on day one, it happens right at the beginning.
You can use for one to emphasize that a particular person is definitely reacting or behaving in a particular way, even if other people are not.
→ the old one
One day or some day or one of these days means at some time in the future .
A one-man performance is given by only one man rather than by several people.
You can refer to something as a one-off when it is made or happens only once.
a jab with the leading hand followed by a cross with the other hand
In one-way streets or traffic systems, vehicles can only travel along in one direction.
(in Neo-Platonic philosophy ) the ultimate being
a glass, can, or bottle of cold beer
each person or thing in a group, without exception
→ the Evil One
a shrewd action, esp. when unscrupulous or dishonest ; an unfair trick, deceitful practice, dishonest dealing, etc
30 minutes after one o'clock, two o'clock, three o'clock, etc
a person who is loved by another, esp a relative
(of a function ) associating a single element of a range with more than one member of the domain
If someone says nice one, they are showing their approval of something clever or funny that they have just seen or heard.
a one-act play
having only one arm
having conceded an advantage or lead to someone or something
having only one eye
If someone describes a town as a one-horse town, they mean it is very small, dull, and old-fashioned .
consisting of one line
A one-liner is a funny remark or a joke told in one sentence, for example in a play or comedy programme .
(of a relation ) holding between more than one ordered pair of elements with the same first member
not changing or varying, as in subject matter or tone; uniform ; monotonous
that has only had one owner
A one-piece article of clothing consists of one piece only, rather than two or more separate parts.
consisting of a single shot
If you say that an activity or relationship is one-sided, you think that one of the people or groups involved does much more than the other or is much stronger than the other.
available in one size only that is designed to fit most people
an early 20th-century ballroom dance with long quick steps, the precursor of the foxtrot
A one-stop shop is a place where you can buy everything you need for a particular purpose.
One-time is used to describe something such as a job, position, or role which someone used to have, or something which happened in the past.
obsessed with one idea, subject, etc
A one-woman performance or business is done by only one woman, rather than by several people.
a person who accompanies an invited person to a social function
British → another name for quickie (sense 1 )
a style of play involving long high kicks towards a central striker