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one

one

∞ 1.0
The number after zero and before two
  • numeral
  • /wʌn/
: uno
  • Available for only one day from D brand.
  • at least one
  • only one
  • one more

Just use that as step one and see what happens.

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Examples

  • They've bought at least one book, one book.

  • So he took one hour from my time.

  • So the answer for one circle is one.

  • So now the side lengths are one, one and one.

  • All you must do is stay sober for one more day.

  • The person eliminated in round one is Darren.

  • So do you think that's one bird, two birds, three birds?

  • I found a mistake in my math homework where the answer should be one instead of zero.

  • The magician pulled one rabbit from the hat, surprising the audience.

  • There is one apple left in the basket after everyone took theirs.

Synonyms

single
vsone
15 1.0

The number one or the digit 1

is the numerical value itself rather than its written symbol
unity
vsone
4 3.1

The number one in maths

is the numeric value itself not the abstract condition of wholeness

Idioms

∞ 1.0

On a single occasion

∞ 1.1

At some time in the future

413 3.7

To give one example among others

413 1.0

Again on another occasion

405 1.5

Among the top people or things in a group

381 1.9

Handle each person or thing in turn, not all at once

186 1.4

Things happen one after another, not at the same time

185 3.2

Used to show one idea that you will compare with another

165 3.9

A single person or thing that is special and has no equal

147 2.8

In the past

139 3.6

To introduce one of two contrasting points in a discussion

136 9.0

A very impressive or powerful example of something

Things follow each other without a break

76 3.6

Only one thing or person like it exists

52 2.5

Happening at the same time

In a better position because you are ready before others

To do a task slowly, handling each part before the next

35 7.4

A short way to show approval or praise for something done well

square one
  • Informal
32 4.1

The place where you start again after something goes wrong

With no pause between actions or events

Exactly the same person or thing

An unlucky event you cannot always avoid

25 2.8

All people without exception

one of the boys
  • Informal
23 6.1

A man the other men accept and treat as part of their group

23 6.3

Wish someone a nice day or a good time as a friendly goodbye

23 1.0

For each person or thing separately

21 4.3

To start again after a failure

Having more than one role or quality at the same time

In the same building where people or things are together

16 3.4

A group of people who are close and friendly like a loving home

ten to one
  • Informal
16 3.7

Very likely to happen

15 6.4

To accept something unpleasant so other people benefit

A single sudden action that happens all at once

12 8.3

To trick someone in a clever way so they do not notice

12 3.6

Focus on today and do not worry about the future

To finish something all at once without taking a break

To do two things at once with one action

To keep moving forward step by step despite problems

A group of people all agree and speak or act together

one for the road
  • Informal
8 6.6

A final drink, usually alcoholic, before leaving

one for the book
  • Informal
8 8.6

An event you will always remember

7 4.9

To have a very small number of people or things

Stay half awake and watch for danger while you sleep because you are afraid

7 3.4

All at once without stopping

at square one
  • Informal
5 4.9

You must start again at the beginning after a failure

To put your own needs before other people's

4 8.1

A reply saying the person who criticizes has the same fault

4 9.8

To scold someone very harshly

4 8.0

To show that famous people are ordinary like everyone else

4 3.1

To eat or swallow something in a single mouthful

4 8.0

Almost dying because of old age or poor health

Risk all your money or chances on one plan

Compounds

∞ 1.7

The first and most important person or thing in a list

347 1.3

A person you care about deeply, like a family member or close friend

186 1.0

One part out of every hundred parts

168 3.0

A person's view in a discussion or argument

159 2.7

Allowing travel in only one direction

153 1.0

A child or animal that is one year old

145 1.0

One more than forty

145 3.1

Between two people with no one else present

135 1.0

One of three equal parts of a whole

133 1.0

One of two equal parts of something

129 1.0

A number equal to 1,000

94 4.1

Done in a single stage that needs only one main step

63 3.9

Made for only one person to use or to perform a show

54 1.0

One more than ninety used before a noun

53 6.3

A sexual encounter that happens for only one night and does not continue

52 1.0

One of four equal parts of a whole

48 1.9

A quick look that gives enough information at once

41 3.7

Having only one arm

A ticket that lets you travel to a place but not back

35 3.4

People who are the richest one of every hundred and have most of the wealth

34 1.0

A single piece of food you put into your mouth at once

29 3.5

When two people compete directly, often in sports

Made the same for everyone without any change

25 5.6

An event that happens only once and is not repeated

one-liner
  • Informal
25 3.9

A short clever joke that fits in one line

24 1.0

One part of ten equal parts

23 2.4

A kneeling position with one knee on the ground often used to propose marriage

one-to-one
  • Specialized
20 4.4

Each thing in one group matches exactly one thing in the other group

18 5.7

Only one woman takes part

one-horse
  • Informal
17 8.3

Small and not important, often far from larger towns

17 1.1

One of five equal parts of a whole

17 1.0

A number equal to 150

17 3.7

A group showing agreement by all saying the same thing

fast one
  • Informal
17 8.2

A clever trick used to cheat someone

16 1.0

A number equal to 120, ten more than one hundred ten

12 1.0

One of four equal parts, for example of a cake or pie

11 5.3

A person in a group who speaks very little and listens more than others

one-way street
  • Informal
11 5.4

A situation where only one person gives and the other only takes

Someone close to you dying, like a family member or friend

the Big One
  • Informal
10 7.9

A very large earthquake that causes great damage, often expected in California

9 1.0

One of six equal parts of a whole

A number written as 130 and equal to one hundred plus thirty

A street where cars can travel in only one direction

8 3.3

A golf shot that gets the ball into the hole with one hit

8 1.0

A piece of paper money worth one dollar that you use to pay for things

7 1.0

One of eight equal parts of a whole

7 1.0

A number that is one more than one hundred

One of one hundred equal parts written as 1/100

one-track mind
  • Informal
7 6.2

A way of thinking that focuses on one thing and ignores others

A number equal to 100 plus 70

6 3.3

A thing that only one person can use

A number equal to 180

A number equal to one followed by twelve zeros

A number equal to one million

one-trick pony
  • Offensive
5 6.0

A person or thing with only one skill

one-horse town
  • Informal
5 6.0

A small town with few shops and little to do

one flesh
  • Literature
5 8.6

Two people joined in marriage who share life and act as one

5 2.7

A golf shot that puts the ball in the hole from the tee in one hit

A number that comes after one hundred fifty

4 1.0

A number equal to one hundred plus ten

4 4.4

A person who does many different jobs alone, for example handling tasks or playing several instruments

one-star review
  • Texting
4 2.8

A comment that gives the lowest rating, usually one star

4 2.3

One of seven equal parts of a whole

3 3.9

A short play with only one act

one shot
  • Specialized
3 4.1

A single bullet and its case ready to be fired from a gun

One of a million equal parts of a whole

Trying to show you are better than someone by bragging

The number 101

A number equal to 125

the Old One
  • Literature
2 9.9

An ancient powerful being far older than humans that is dangerous or ignores people

A show that happens in one place for only one night

One of a billion equal parts

one-hitter
  • Jargon
2 8.2

A baseball game when the pitcher lets the other team get only one hit

How Many

hundred
∞ 1.0
ten
334 1.0
seven
114 1.0
five
∞ 1.0
two
∞ 1.0
one
∞ 1.0
zero
465 1.0

Surface Forms

one cardinal word
1 cardinal digit
1st ordinal digit
first ordinal word

Etymology

One comes from an old English word ān that meant 'single' or 'whole', so it is the name of the smallest positive number. That's why one means the single unit, the number that stands alone.