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fill out vs fill up

Both 'fill out' and 'fill up' are correct phrases, but they are used in different contexts. 'Fill out' is commonly used when completing a form or document by providing required information. On the other hand, 'fill up' is used when adding contents to something to make it full, such as filling up a glass with water.

Last updated: March 23, 2024 • 892 views

fill out

This phrase is correct and commonly used in English, especially when completing forms or documents by providing necessary information.

Use 'fill out' when you are completing a form, document, or any other type of paperwork by adding the required information.

Examples:

Please fill out this application form with your personal details.
Don't forget to fill out the survey after the presentation.
I need to fill out this report before the meeting.
Could you help me fill out this questionnaire?
Students must fill out the registration form before the deadline.

Show examples from the web [+]

Administration brought him insurance forms to fill out.
We could use a little light to fill out the petition.
I can't remember what form it was I had to fill out.
Yes, but you have to fill out forms.
And we'll have to fill out questionnaires.
Well, sit down, we'll fill out some forms.
Sorry I didn't have time to fill out the paperwork.
Here are some insurance forms you need to fill out.
That I'm going to fill out some college applications, mechanical engineer.
But beyond that, all I did was fill out an application.
Patients in the study are required to fill out this form.
You've got some harbor passes to fill out.
The following sections give guidance on how to fill out the form.
I brought an application for you to fill out.
I'm ready to fill out the application form.
And I need you to fill out these forms.
I just forgot to fill out some forms.
Still a lot of paperwork to fill out on last night.
Don't forget to fill out those cards.
They had me fill out a post-deployment checklist.

Alternatives:

complete
fill in
answer
provide
write in

fill up

This phrase is correct and commonly used in English, especially when adding contents to something to make it full.

Use 'fill up' when you are adding a substance or contents to something to make it full, such as filling up a glass with water, a tank with gas, or a room with furniture.

Examples:

Please fill up my glass with water.
I need to fill up the car with gas before we leave.
The restaurant will fill up quickly, so we should make a reservation.
Let's fill up the storage room with these boxes.
The stadium will fill up with fans before the game starts.

Show examples from the web [+]

But I can't fill up a space shuttle with geriatrics.
I like to fill up each little waffle hole with syrup.
It's starting to fill up with blood.
Plenty of time for her lungs to fill up.
Get them something to fill up on.
Helmet starts to fill up with toxic fumes.
Safta Lavin will help you fill up those uniforms in no time.
This guy can fill up a football stadium on a Tuesday.
They dilute it to fill up car batteries.
Go fill up the gas can, Jobe.
We'll be back later to fill up the thermos.
A blank one we can fill up with a future together.
I saw stars standing up on their tips and throwing them to you. to fill up the room... with the most beautiful light there is.
And fill up the (BEEPING) landfill.
So much empty space to fill up with your... adventures.
If the bag starts to fill up with blood, you've made a big mistake.
I propose we purge the demons of responsibility and fill up this house with booze, girls, and napalm.
You should also note it's all in singles because it takes so many bills to fill up a briefcase.
I need you to fill up the restaurant any way you can.
Well, you run a couple of wiretaps, you fill up a file cabinet pretty fast.

Alternatives:

top up
load up
stock up
replenish
fill to the brim

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