fill in

USAGE SUMMARY

"fill in" is a correct and usable phrase in written English.
It is used when information is added to a form, document, or other surface. For example, "Please fill in the blanks on the form with the requested information."

✓ Grammatically correct

Wiki

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Fill in the blank.

The New Yorker

Fill in the selection.

WikiHow

Fill in low areas.

WikiHow

Fill in the forms.

WikiHow

Fill in missing portions.

WikiHow

Fill in your lips.

WikiHow

Fill in the pit.

WikiHow

Fill in your balances.

WikiHow

Fill in outline.

WikiHow

Fill in transaction information.

WikiHow

Fill in the outline.

WikiHow

Expert writing Tips

Best practice

When instructing someone to complete a form, be specific. For example, instead of just saying "fill in", say "fill in all the required fields in the application form."

Common error

While both are similar, "fill out" is generally preferred when referring to completing forms or questionnaires. Use "fill in" for more general contexts like filling a hole or gap.

Linguistic Context

The phrasal verb "fill in" primarily functions as a transitive verb, requiring an object to complete its meaning. It can denote completing something, providing missing information, or substituting for someone. Ludwig examples showcase its versatility across different contexts, aligning with Ludwig AI.

Expression frequency: Very common

Frequent in

Wiki

68%

News & Media

1%

Science

0%

Less common in

Formal & Business

0%

Encyclopedias

0%

Reference

0%

Ludwig's WRAP-UP

In summary, "fill in" is a versatile phrasal verb with several distinct meanings. Predominantly used to mean to complete a form or provide missing information, as validated by Ludwig AI, it also serves to describe the act of substituting for someone. While often interchangeable with "fill out" (especially in the context of forms), "fill in" boasts a broader range of applications. Its widespread use across diverse sources, particularly on WikiHow, solidifies its status as a common and generally acceptable phrase in neutral registers. Remember to be specific and provide enough context. For example, use this phrase when you are asking people to "fill in the blanks" with the missing information.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

fill out

Similar meaning, often used specifically for forms or documents. Using 'fill out' is extremely close in meaning to the query.

complete

Replaces the phrasal verb with a single verb, focusing on finishing or making whole.

supply

Emphasizes the act of providing missing information or elements.

inform

Highlights the act of providing someone with information that they lack.

flesh out

Adds more detail to an existing idea or plan.

substitute

Focuses on replacing someone or something temporarily.

stand in

Implies temporary replacement, often in a professional context.

replenish

Focuses on restoring something that has been depleted.

shade

Suggests adding color or darkness to an area.

make out

Can mean to discern or understand something, similar to filling in missing details.

FAQs

How do I use "fill in" in a sentence?

You can use "fill in" to mean to complete a form (e.g., "Please fill in this application form"), to provide missing information (e.g., "Can you fill me in on what happened at the meeting?"), or to substitute for someone (e.g., "He will fill in for the injured player").

What's the difference between "fill in" and "fill out"?

While often interchangeable, "fill out" is typically used specifically for completing forms or questionnaires, whereas "fill in" can have broader applications, such as providing missing information or substituting for someone.

What can I say instead of "fill in" when referring to completing a form?

You can use alternatives like "complete" or "fill out" depending on the context. If you want to emphasize that all fields must be populated use "fully complete".

Is it grammatically correct to say "fill in the blank"?

Yes, "fill in the blank" is a common and grammatically correct phrase. It refers to completing a sentence or statement where a word or phrase is missing.