Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
fill out a diary
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "fill out a diary" is not correct in standard English usage.
The correct expression would typically be "write in a diary" or "keep a diary." Example: "Every evening, I take a few minutes to write in my diary about my day."
⚠ May contain grammatical issues
Science
Wiki
News & Media
Alternative expressions(20)
journal
prepare a report
lodge a report
fill out a lot
completed a report
fill out a picture
filled out a report
fill out a board
completing a report
draw up a report
file a report
fill out a report
fill out a list
filling out a report
to complete a report
complete a report
draft a report
submit a report
generate a report
fill out a declaration
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
3 human-written examples
They did also fill out a diary where they rated symptoms on a daily basis.
Science
= Follow-up Questionnaire; F.Q. = Final Questionnaire; KOOS = Knee Osteoarthritis Outcome Score; NRS = Numeric Rating Scale; ICOAP = Intermittent and Constant OsteoArthritis Pain; PRODISQ = PROductivity and DISease Questionnaire During the DIPA trial, patients fill out a diary to score daily pain (using an 11-point NRS), medication use, and compliance.
Fill out a diary entry each time you get a headache.
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
The patients filled out a diary card for the assessment of nausea and vomiting.
Patients filled out a diary for up to 4 weeks on their symptoms, illness perception and related behaviour.
Science
It was reported to be frustrating to have filled out a diary form and then not be able to send it because of a validation error.
Volunteers filled out a Diary for Adverse Events during the first 10 d after vaccination, and were asked to report all adverse events for the study duration.
In addition, all participants filled out a standardized diary on symptoms of influenza during the 56 day follow-up period.
Science
In order to assess the subjective experience during the study participants filled out a daily diary and passed weekly sessions of in-depth evaluation, both providing a bulk of quantitative and qualitative data.
Science
Study arm one and two involve weekly reminder e-mails to login and fill out a consumption diary.
Science
Patients were asked to fill out a daily diary, which was reviewed during each patient's weekly assessment.
Science
Expert writing Tips
Best practice
Although the phrase "fill out a diary" is understandable, prefer using "write in a diary" or "keep a diary" for clearer and more grammatically sound communication.
Common error
Avoid using "fill out" when referring to writing entries in a diary. "Fill out" is typically used for forms or questionnaires, not for recording personal thoughts or events. Instead, use "write in" or "keep" for diaries.
Source & Trust
82%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "fill out a diary" functions as a verb phrase where "fill out" is a phrasal verb and "diary" is the direct object. Ludwig AI suggests that this construction is not standard English usage, recommending alternatives like "write in a diary" or "keep a diary".
Frequent in
Science
40%
Wiki
30%
News & Media
30%
Less common in
Formal & Business
0%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
While the phrase "fill out a diary" is occasionally used, Ludwig AI highlights that it isn't considered standard English. The more appropriate and widely accepted alternatives are "write in a diary" or "keep a diary". The phrase appears mostly in scientific and general contexts. It's best to use the suggested alternatives to ensure clarity and grammatical correctness in both formal and informal communication. Remember, "fill out" is usually reserved for completing forms or questionnaires, not for the personal act of recording thoughts in a diary.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
write in a diary
This is the most common and grammatically correct way to express recording information in a diary.
keep a diary
Focuses on the act of maintaining a diary over a period of time, regularly adding entries.
maintain a diary
Similar to 'keep a diary', emphasizing the ongoing effort of recording events and thoughts.
record in a diary
Highlights the act of documenting specific events or information.
jot down in a diary
Implies a quick and informal way of noting things in a diary.
log in a diary
Suggests a more systematic and detailed method of recording events.
enter in a diary
Refers to the action of adding new information to a diary.
note down in a diary
This phrase emphasizes the act of quickly writing important information into a diary.
document in a diary
This alternative is used when a formal or official record is made in the diary.
chronicle in a diary
Implies recording events in a diary in chronological order.
FAQs
Is it grammatically correct to say "fill out a diary"?
While understandable, "fill out a diary" isn't standard English. It's better to say "write in a diary" or "keep a diary". Ludwig AI explains the phrase is not correct and specifies "write in a diary", "record in a diary" and "maintain a diary" as alternatives.
What's the difference between "fill out a diary" and "write in a diary"?
"Fill out" is typically used for forms, questionnaires, or applications. "Write in a diary" means to record your thoughts, experiences, or events. Using the latter is more accurate when talking about diaries.
Can I use "fill out" with other types of records besides diaries?
Yes, "fill out" is appropriate for forms, applications, surveys, or any document with blanks that need to be completed. For example, "fill out a form" or "fill out a survey" are correct.
What are some synonyms for "keep a diary"?
Alternatives to "keep a diary" include "maintain a diary", "write in a diary", or "journal", all referring to the practice of regularly recording events and thoughts.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
2.8/5
Expert rating
Real-world application tested