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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
register in
Grammar usage guide and real-world examplesUSAGE SUMMARY
"register in" is correct and usable in written English.
It is generally used when completing a process and/or task. For example, "I registered in for the online class."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(6)
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
59 human-written examples
Offenders would be required to register in person.
News & Media
They register in the State Theater remarkably well.
News & Media
Why is the sex offenders register in the news now?
News & Media
But the Miho Mimuras don't register in those statistics.
News & Media
Residents can register in person until Oct. 28.
News & Media
He was struck off the medical register in 1991.
News & Media
Please register in advance as space is limited.
News & Media
Otherwise it is not going register in public opinion".
News & Media
But residents can still register in person until Oct. 31.
News & Media
Or register in person at the places on this list.
News & Media
They register in a way they never did before.
News & Media
Expert writing Tips
Best practice
When using "register in", ensure the context clearly indicates the system, database, or location where the registration is taking place. Be specific about what someone is registering in.
Common error
Avoid using "register to" instead of "register in" when referring to a system or location. "Register to" is more suitable when indicating purpose or intent (e.g., register to vote).
Source & Trust
79%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrasal verb "register in" functions primarily as an intransitive verb, indicating the act of formally enrolling or recording information within a specific system, database, or location. As seen in Ludwig, it's often used to describe processes such as voter registration or event participation.
Frequent in
News & Media
57%
Science
24%
Wiki
10%
Less common in
Formal & Business
5%
Academia
2%
Social Media
2%
Ludwig's WRAP-UP
In summary, "register in" is a versatile phrasal verb that denotes the formal process of adding oneself to a system, list, or location. Ludwig AI confirms that this is correct and usable in written English. The phrase is frequently encountered in news, scientific publications, and general instructions. Usage ranges from neutral to professional contexts. Remember to use "register in" to specify the where and reserve "register to" to describe the why. Alternatives such as "sign up for" or "enroll in" may be suitable in less formal situations. By considering the context and intended level of formality, writers can effectively employ "register in" to convey clear and accurate information.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
sign up for
Focuses on the act of subscribing or enrolling, often for a service or event.
enroll in
Implies a more formal process of joining a course, program, or institution.
enlist in
Suggests joining a military or organized group.
join
A more general term for becoming a member of a group or organization.
log in to
Refers specifically to accessing a digital system or platform.
subscribe to
Indicates a commitment to receive regular updates or services.
get involved in
Highlights participation and engagement in an activity or group.
put your name down for
An informal way of indicating interest or intention to participate.
get on the list for
Suggests being added to a waiting list or registry.
place yourself on the registry
Suggests officially adding details on some kind of official list
FAQs
How do I use "register in" correctly in a sentence?
Use "register in" to indicate the act of formally adding your details to a system, list, or location. For example, "You must register in advance for the workshop." or "Residents can "register in person" until Oct. 28".
What's the difference between "register in" and "sign up for"?
"Register in" typically implies a more formal or official process, whereas "sign up for" is often used for less formal activities or services. The nuance depends on context.
Is it ever appropriate to say "register to" instead of "register in"?
Yes, "register to" is correct when indicating a purpose or action you want to perform after registering. For example, "Register to vote" or "Register to receive updates". When indicating a location, system or list, you should say "register in".
What can I say instead of "register in" if I want to sound less formal?
Depending on the context, you could use alternatives like "sign up for", "join", or "get involved in". These options generally convey a less official tone.
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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
79%
Authority and reliability
4.5/5
Expert rating
Real-world application tested