English
Overview
|Listening
EnvolPrep Logo
EnvolPrep
CELPIP-helpers
|Learn Words

fill out

fɪl aʊt

neutral
beginner
Base verb:
fill
Particle:
out
Separable:
Yes

What does "fill out" mean?

  1. To complete a form or document
  2. To become fuller or rounder in shape
  3. To add details to make something more complete

Examples

  • You need to fill out an application form.
  • She filled out after having the baby.
  • The author filled out the story with more background details.
  • Please fill out this questionnaire completely.
  • He's really filled out since I last saw him.

How to use it

American English prefers 'fill out' for forms, while British/Canadian may use 'fill in'. 'Fill out' for body shape is neutral, not negative.

Word order

Object can go between: 'fill the form out' or after: 'fill out the form'. For body changes: intransitive.

Similar expressions

complete
expand
gain weight
develop

Opposites

leave blank
slim down

Related phrasal verbs

  • fill in

    To complete a form by writing information in spaces

  • fill up

    To make something completely full

  • get out

    To leave a place, room, or vehicle

  • turn out

    To have a particular result or end in a certain way

  • go out

    To leave your home for social activities or entertainment

  • give out

    To distribute something to multiple people

Use it in a practice answer

Try "fill out" in a CELPIP-style Speaking or Writing task. The AI feedback tells you whether your word choice worked.

Speaking practiceWriting practice
All phrasal verbs

EnvolPrep

Free CELPIP practice with AI feedback

EnvolPrep is an independent test preparation platform. We are not affiliated with, endorsed by, or connected to Prometric Canada or Paragon Testing Enterprises, who own and deliver the CELPIP test. CELPIP is a registered trademark of Paragon Testing Enterprises, acquired by Prometric Canada in 2021.

© 2026 EnvolPrep · Questions or ideas? viktorbezai@gmail.com