Meaning of the word "fill in" in English

What does "fill in" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

fill in

US /fɪl ɪn/

UK /fɪl ɪn/

to complete a form or document by adding information

Example:

•

Please fill in your name and address on the application form.

•

I need to fill in some details before submitting the report.

Synonym:

complete fill out write in

to provide someone with information they do not have

Example:

•

Can you fill me in on what I missed?

•

The manager will fill you in on the project details tomorrow.

Synonym:

brief update inform

to act as a substitute for someone who is absent

Example:

•

I'm happy to fill in for you while you're on vacation.

•

She had to fill in for the absent teacher.

Synonym:

substitute stand in deputize

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