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
categorize under
Grammar usage guide and real-world examplesUSAGE SUMMARY
'categorize under' is a correct and usable phrase in written English.
You can use the phrase when you are sorting items into different classes or groups. For example: "Let's categorize the books under fiction, history, and science."
✓ Grammatically correct
News & Media
Science
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
2 human-written examples
The above example, which you could categorize under the denominator 're-converting', is pretty similar to what SeeWhy is trying to accomplish for e-commerce vendors and web application providers: try and get the abandoners (i.e. people who leave online registration or purchasing system prior to finishing the process) to come back and complete the cycle.
News & Media
Reflecting on it now, perhaps Fergie didn't mind offering up her digital body for some 14 year old's avatar to smooch when she already realized countless dudes and ladyhomos already fondled their very non-digital genitalia to thoughts of her doing filthy sexual deeds no Maxis programmer could even imagine, let alone categorize under the heading "act romantic".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
Situations for which both the technical and disciplinary decision was correct were categorized under "correct perception and categorization".
Foods are categorized under protein, carbs, fat, fruit, and veggies.
News & Media
Some phrases were categorized under headings like "Sex and the City," "Interjections," and "British Slang".
News & Media
She says their responses, presented as individual essays, can be categorized under four themes: Gain perspective.
News & Media
I usually concentrated on quotes categorized under the headings "Christian," "Christianity," "Church," "Belief," "Faith," "God," "Heaven," "Prayer," "Worship".
News & Media
Those concepts were eventually categorized under the two scales called yo and in.
Encyclopedias
"In a bookstore or library my novels are categorized under 'siporet,' or narrative prose, as opposed to what is called documentary, which is nonfiction.
News & Media
This was still fresh in my mind as I scrolled through a series of tweets about sexual harassment, rape, and misogyny, categorized under the hashtag #YesAllWomen.
News & Media
The rats, for the record, were categorized under "the bad"; the Straphangers chose 12 criteria to rate the subway platforms.
News & Media
Expert writing Tips
Best practice
When using "categorize under", ensure that the category you are placing items into is clearly defined and relevant to the items being categorized.
Common error
Avoid categorizing items too broadly. If categories are too general, the categorization loses its usefulness and can lead to misinterpretation.
Source & Trust
81%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "categorize under" functions as a phrasal verb, indicating the action of assigning items to specific categories or groups. Ludwig AI's analysis confirms its usability in written English.
Frequent in
Science
50%
News & Media
50%
Formal & Business
0%
Less common in
Encyclopedias
0%
Wiki
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "categorize under" is a grammatically correct phrasal verb used to describe the action of assigning items to specific categories. While relatively rare in occurrence, Ludwig AI confirms its validity and usefulness, finding it primarily in news and scientific contexts. When using this phrase, clarity is key: ensure the categories are well-defined to avoid over-generalization.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
classify under
Replaces "categorize" with "classify", maintaining the same meaning of sorting into groups.
group under
Uses "group" instead of "categorize", indicating a broader sense of association.
list under
Emphasizes placement within a list rather than a formal classification.
file under
Suggests organizing items in a structured filing system.
include under
Indicates that something is part of a larger category.
designate as
Emphasizes a formal assignment to a category.
label as
Focuses on applying a specific label or identifier.
sort into
Highlights the action of sorting items into different categories.
place within
Indicates positioning something inside a defined category.
assign to
Highlights the allocation of an item to a specific category.
FAQs
How do I use "categorize under" in a sentence?
Use "categorize under" to indicate the process of assigning items to specific categories based on shared characteristics. For example, "We will "classify under" different headings."
What are some alternatives to "categorize under"?
Alternatives include "classify under", "group under", or "list under", depending on the specific context and desired nuance.
Is there a difference between "categorize under" and "classify as"?
"Categorize under" implies a hierarchical structure where items are placed within a broader category. "Classify as" is generally equivalent but might suggest a more formal or scientific sorting process.
When is it appropriate to use "categorize under" in writing?
It is appropriate to use "categorize under" when organizing information, explaining a system of classification, or describing how items are grouped based on shared attributes.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
81%
Authority and reliability
4.3/5
Expert rating
Real-world application tested