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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
are under developed
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "are under developed" is not correct as it should be written as "are underdeveloped" (without a space).
You can use it to describe something that has not reached its full potential or has not been fully developed, often in contexts like economics, technology, or personal growth. Example: "Many regions in the world are underdeveloped, lacking access to basic resources and infrastructure."
⚠ May contain grammatical issues
Science
News & Media
Formal & Business
Alternative expressions(2)
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
However, evidence based approaches to support guideline implementation are under developed.
Science
This paper shows that although cultural competency training is important, the form it should take and the organisational performance frameworks to assess impacts are under developed.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
When it comes to fitting, Chi-square minimization has been dominant but new methodologies are under developing.
Academia
As a solution to the problems, NAND Flash memories having stacked layers are under developing extensions [31, 32].
Science
Currently available vaccines have clearly major limits and new vaccines are under developing in order to better control this disease.
Science
Unfortunately, faculty development offices and programs are under-developed or under-utilized in many medical schools [ 15, 31, 36].
Science
And, although some of the minor roles are under-developed, the show possesses a restrained power, which can only get stronger when the technical problems are sorted.
News & Media
Treatment programmes specifically for women offenders are under-developed.
Science
While Stein hands in a fairly raw, open account of himself, the other characters in the book are under-developed.
News & Media
These industries are the most exposed to lower-cost competition from China and the rest of Asia.Services are under-developed.
News & Media
Social-ecological "hotspots" represent valuable areas from both human and environmental perspectives but appropriate and valid methods for identifying such areas are under-developed.
Science
Expert writing Tips
Best practice
Prefer the grammatically correct form "are underdeveloped" to ensure clarity and professionalism in your writing.
Common error
Ensure that "underdeveloped" is written as one word, not two ("under developed"). This avoids grammatical errors and improves readability.
Source & Trust
81%
Authority and reliability
3.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "are under developed" functions as a descriptive adjective phrase, aiming to characterize a subject as being in a state of incomplete or insufficient development. Ludwig's AI points out its incorrect grammatical form, advising on the correct usage.
Frequent in
Science
33%
News & Media
33%
Formal & Business
33%
Less common in
Wiki
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "are under developed" is typically used to describe something that is not yet fully or sufficiently developed. However, it is grammatically incorrect; the correct form is "are underdeveloped". Despite this, Ludwig's examples indicate its presence across diverse fields like science, news, and formal communication, though sparingly. For clarity and professionalism, especially in formal contexts, it's best to use the corrected form or consider alternatives like "are insufficiently developed" or "are not fully developed". Remember to write "underdeveloped" as one word to avoid grammatical errors.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
are underdeveloped
Corrected form of the original phrase, grammatically sound.
are insufficiently developed
Replaces "under" with "insufficiently", emphasizing the lack of development.
are not fully developed
Uses a negative construction to express the lack of complete development.
are inadequately developed
Similar to 'insufficiently developed', but uses 'inadequately' for emphasis.
are partially developed
Highlights the presence of some development, but not to a complete extent.
are incompletely developed
Similar to 'partially developed', stressing the lack of completeness.
are lagging in development
Focuses on the slower pace of development compared to expectations.
are behind in their development
Emphasizes a delayed state in the developmental process.
have not reached their full potential
Shifts focus to the untapped potential due to lack of development.
are still in their early stages
Indicates a nascent phase of development, implying more progress is needed.
FAQs
What's the correct way to write "are under developed"?
The correct form is "are underdeveloped" (one word). The two-word form is grammatically incorrect.
What does it mean when something is "under developed"?
It means that something is not yet fully or sufficiently developed; it's still in progress or lacking certain features. Consider alternatives such as "are insufficiently developed" or "are not fully developed".
When should I use "are underdeveloped" in a sentence?
Use "are underdeveloped" when describing areas, skills, or systems that require further improvement or expansion. For example, "Rural infrastructure projects are underdeveloped in many regions."
What are some alternative ways to say "are under developed"?
Alternatives include "are inadequately developed", "are partially developed", or "have not reached their full potential" depending on the specific context.
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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
81%
Authority and reliability
3.5/5
Expert rating
Real-world application tested