Once
adverb
One time only.
I have been to Paris once.
Often appears as...
- once in a lifetime
- once in a while
adverb
As soon as, when.
Once you finish your homework, we can play.
Often appears as...
- once that
- once this
adverb
At some time in the past.
This building was once a school.
Often appears as...
- once was
- once were
adverb
At any time, ever.
Do you once in a while think of me?
Often appears as...
- once in a while
- once in a blue moon
conjunction
As and when, after which.
Once the dishes are washed, they can be dried.
Often appears as...
- once it
- once they
adverb
Simultaneously.
They all stood up at once.
Often appears as...
- all at once
- everyone at once
adverb
One time only.
I have been to Paris once.
Often appears as...
- once in a lifetime
- once in a while
adverb
As soon as, when.
Once you finish your homework, we can play.
Often appears as...
- once that
- once this
adverb
At some time in the past.
This building was once a school.
Often appears as...
- once was
- once were
adverb
At any time, ever.
Do you once in a while think of me?
Often appears as...
- once in a while
- once in a blue moon
conjunction
As and when, after which.
Once the dishes are washed, they can be dried.
Often appears as...
- once it
- once they
adverb
Simultaneously.
They all stood up at once.
Often appears as...
- all at once
- everyone at once
Definition 1 of 6
Pro Tip 1/2Exclusive Event
Use 'once' to stress the uniqueness of an event or experience.
I saw a comet once, it was amazing.
Pro Tip 2/2Past Tense
'Once' often accompanies past simple to describe past events.
Once, I lived in a remote village.
Pro Tip 1/2Exclusive Event
Use 'once' to stress the uniqueness of an event or experience.
I saw a comet once, it was amazing.
Pro Tip 2/2Past Tense
'Once' often accompanies past simple to describe past events.
Once, I lived in a remote village.
Pro Tip 1/2Exclusive Event
Use 'once' to stress the uniqueness of an event or experience.
I saw a comet once, it was amazing.
Pro Tip 2/2Past Tense
'Once' often accompanies past simple to describe past events.
Once, I lived in a remote village.
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Video examples
Can you solve...
written by one of the smartest people in history? Let's give it a shot. The world's rarest fish has been stolen from the city aquarium. The police have followed the scent to a street with five identical looking houses. But they can't search all the houses at once, and if they pick the wrong one, the thief will know they're on his trail.
Video examples
Questions No One Knows...
or perhaps the evolution of an intelligence capable of creating sophisticated technology is far rarer than we've assumed. After all, it's only happened once on Earth in four billion years. Maybe even that was incredibly lucky. Maybe we are the first such civilization in our galaxy.
Video examples
Can you solve the virus...
It seems like you're out of luck, unless you look at the rules carefully and notice an important exception. It's true that once you activate the switch in a contaminated room, it's destroyed and you can never go back. But there's one room that wasn't contaminated - the entrance.
Video examples
Why are sloths so slow?...
They descend from the canopy just once a week for a bathroom break. When sloths do move, it's not very fast. It would take a sloth about five minutes to cross an average neighborhood street. This unhurried approach to life means that sloths don't need very much muscle.
Video examples
The 'Busy' Life of the...
It only does it about once a week but why does it come down to the ground to do it? And why does it nearly always choose to do so in exactly the same place? Whatever the reason, it must be very important, for a sloth on the ground is almost helpless.
Video examples
How playing an...
each have corresponding areas of the brain where activity can be observed. But when researchers got the participants to listen to music, they saw fireworks. Multiple areas of their brains were lighting up at once, as they processed the sound,
Video examples
How to deal with...
somebody asked me once what are you looking for in a relationship and I replied certainty I needed certainty in an uncertain world but we live in an uncertain world and so there has to be a
Video examples
Watch One Family's...
Katie said to me if something happens to me during the transplant I don't want you to be upset I was probably a lot more nervous than she was once we make a decision there's no going
Video examples
Are China and the US...
we can turn this into a future driven by peace and prosperity and not once again repeat the tragedies of war. I thank you.
Video examples
Puffin Hunts Fish To...
once there they plunge into another world
Video examples
Can you solve...
written by one of the smartest people in history? Let's give it a shot. The world's rarest fish has been stolen from the city aquarium. The police have followed the scent to a street with five identical looking houses. But they can't search all the houses at once, and if they pick the wrong one, the thief will know they're on his trail.
Video examples
Questions No One Knows...
or perhaps the evolution of an intelligence capable of creating sophisticated technology is far rarer than we've assumed. After all, it's only happened once on Earth in four billion years. Maybe even that was incredibly lucky. Maybe we are the first such civilization in our galaxy.
Video examples
Can you solve the virus...
It seems like you're out of luck, unless you look at the rules carefully and notice an important exception. It's true that once you activate the switch in a contaminated room, it's destroyed and you can never go back. But there's one room that wasn't contaminated - the entrance.
Video examples
Why are sloths so slow?...
They descend from the canopy just once a week for a bathroom break. When sloths do move, it's not very fast. It would take a sloth about five minutes to cross an average neighborhood street. This unhurried approach to life means that sloths don't need very much muscle.
Video examples
The 'Busy' Life of the...
It only does it about once a week but why does it come down to the ground to do it? And why does it nearly always choose to do so in exactly the same place? Whatever the reason, it must be very important, for a sloth on the ground is almost helpless.
Video examples
How playing an...
each have corresponding areas of the brain where activity can be observed. But when researchers got the participants to listen to music, they saw fireworks. Multiple areas of their brains were lighting up at once, as they processed the sound,
Video examples
How to deal with...
somebody asked me once what are you looking for in a relationship and I replied certainty I needed certainty in an uncertain world but we live in an uncertain world and so there has to be a
Video examples
Watch One Family's...
Katie said to me if something happens to me during the transplant I don't want you to be upset I was probably a lot more nervous than she was once we make a decision there's no going
Video examples
Are China and the US...
we can turn this into a future driven by peace and prosperity and not once again repeat the tragedies of war. I thank you.
Video examples
Puffin Hunts Fish To...
once there they plunge into another world
Example 1 of 10
Quote examples
George Santayana
Spanish Philosopher
We must welcome the future, remembering that soon it will be the past; and we must respect the past, remembering that it was once all that was humanly possible.
Quote examples
Orson Welles
American Actor
I can think of nothing that an audience won't understand. The only problem is to interest them; once they are interested, they understand anything in the world.
Quote examples
Galileo Galilei
Italian Scientist
All truths are easy to understand once they are discovered; the point is to discover them.
Quote examples
Helen Keller
American Author
What we have once enjoyed we can never lose. All that we love deeply becomes a part of us.
Quote examples
Robert A. Heinlein
American Writer
You can have peace. Or you can have freedom. Don't ever count on having both at once.
Quote examples
Jimi Hendrix
American Musician
It's funny how most people love the dead, once you're dead, you're made for life.
Quote examples
Rainer Maria Rilke
German Poet
One had to take some action against fear when once it laid hold of one.
Quote examples
Dwight D. Eisenhower
American President
The world moves, and ideas that were once good are not always good.
Quote examples
Niccolo Machiavelli
Italian Writer
The wise man does at once what the fool does finally.
Quote examples
Henry David Thoreau
American Author
What is once well done is done forever.
Quote examples
George Santayana
Spanish Philosopher
We must welcome the future, remembering that soon it will be the past; and we must respect the past, remembering that it was once all that was humanly possible.
Quote examples
Orson Welles
American Actor
I can think of nothing that an audience won't understand. The only problem is to interest them; once they are interested, they understand anything in the world.
Quote examples
Galileo Galilei
Italian Scientist
All truths are easy to understand once they are discovered; the point is to discover them.
Quote examples
Helen Keller
American Author
What we have once enjoyed we can never lose. All that we love deeply becomes a part of us.
Quote examples
Robert A. Heinlein
American Writer
You can have peace. Or you can have freedom. Don't ever count on having both at once.
Quote examples
Jimi Hendrix
American Musician
It's funny how most people love the dead, once you're dead, you're made for life.
Quote examples
Rainer Maria Rilke
German Poet
One had to take some action against fear when once it laid hold of one.
Quote examples
Dwight D. Eisenhower
American President
The world moves, and ideas that were once good are not always good.
Quote examples
Niccolo Machiavelli
Italian Writer
The wise man does at once what the fool does finally.
Quote examples
Henry David Thoreau
American Author
What is once well done is done forever.
Example 1 of 10
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