one

The number one or the digit 1

The number one in maths

At some time in the future

On a single occasion

To give one example among others

Again on another occasion

Among the top people or things in a group

Things happen one after another, not at the same time

In the past

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

To introduce one of two contrasting points in a discussion

Only one thing or person like it exists

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

Used to show one idea that you will compare with another

In a better position because you are ready before others

Exactly the same person or thing

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

Happening at the same time

The place where you start again after something goes wrong

A very impressive or powerful example of something

All people without exception

An unlucky event you cannot always avoid

With no pause between actions or events

Things follow each other without a break

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

Having more than one role or quality at the same time

In the same building where people or things are together

To accept something unpleasant so other people benefit

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

A single sudden action that happens all at once

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

To start again after a failure

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

Decide or think of things during a situation without planning ahead

To finish something all at once without taking a break

A group of people all agree and speak or act together

To keep moving forward step by step despite problems

A final drink, usually alcoholic, before leaving

For each person or thing separately

To do two things at once with one action

You must start again at the beginning after a failure

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

All at once without stopping

Risk all your money or chances on one plan

To have a very small number of people or things

To put your own needs before other people's

To try something new in a place or way no one has done before

To respond equally strongly when someone attacks or criticizes you

A clear top item on charts or rankings that is much more popular than others

Almost dying because of old age or poor health

To scold someone very harshly

To eat or swallow something in a single mouthful

To join fully as a married couple, sharing their bodies and lives

Heard but quickly forgotten

The first and most important person or thing in a list

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

One of three equal parts of a whole

Allowing travel in only one direction

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

A person's view in a discussion or argument

A respected spirit of an ancestor who protects people and gives wisdom

One of two equal parts of something

A private meeting or match between two people

A thing that only one person can use

Putting your own needs or interests before those of other people

Between two people with no one else present

One part out of every hundred parts

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

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

When two people compete directly, often in sports

One of four equal parts of a whole

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

A number equal to 1,000

A child or animal that is one year old

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

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

One part of ten equal parts

One of five equal parts of a whole

A group showing agreement by all saying the same thing

A short clever joke that fits in one line

Only one woman takes part

Made the same for everyone without any change

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

A clever trick used to cheat someone

Having only one arm

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

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

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

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

An event that happens only once and is not repeated

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

Able to learn something new from a single example

One of six equal parts of a whole

A street where cars can travel in only one direction

The number 101

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

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

Done in a single stage that needs only one main step

A number equal to 150

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

A quick look that gives enough information at once

A small town with few shops and little to do

A person or thing with only one skill

Trying to show you are better than someone by bragging

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

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

A short play with only one act

One of eight equal parts of a whole

One of one hundred equal parts written as 1/100

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

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

One of seven equal parts of a whole

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

A fast ballroom dance from the early 1900s with quick walking steps

A number equal to 100 plus 70

Small and not important, often far from larger towns

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

A comment that gives the lowest rating, usually one star

A card game where players try to get closer to 21 than the dealer without going over

A number equal to 125

A machine in a casino that gives money when you pull a lever

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

One of a million equal parts of a whole

One of a thousand equal parts of something

A number equal to 180

A number that comes after one hundred fifty

A free throw where making the first shot gets a second attempt