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
understand on what
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "understand on what" is not correct in standard written English.
It is not a commonly used expression and may lead to confusion in communication. Example: "I need to understand on what basis you made your decision."
⚠ May contain grammatical issues
News & Media
Science
Encyclopedias
Alternative expressions(1)
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
8 human-written examples
Indeed, in modern societies often permeated by deception, people need to understand on what circumstances one can promote or inhibit this kind of behaviour.
Science
In addition to the names of kings, events occasionally are mentioned, especially for the later years; but it is hard to understand on what principle they are included.
Encyclopedias
"What amazes those who follow you and strive to understand on what basis you claim the socialist system's superiority," Mr. Grigorescu tells the Ceausescu character, "is that you behave like — and you actually are — a great capitalist".
News & Media
To an outsider who believes what the Japanese tell him namely, that this is really the way the system works—it is hard to understand on what basis the crucial decision at age 45 is made.
News & Media
Try to understand on what grounds other angels and VCs passed.
News & Media
There's no better way to help people understand on what not to click than showing them examples.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
52 human-written examples
We were pretty well understood on what we were going to do".
News & Media
Once more is understood on what makes a data set predictive, this knowledge can be utilised to derive a more accurate predictive model.
Science
This visit could run long, I now understand, depending on what I say next.
News & Media
With scrimmages you will understand better on what you must do during the game as well as off the game.
Wiki
Everyone is trying to understand what is going on and what the consumer mindset is".
News & Media
Expert writing Tips
Best practice
Avoid using the phrase "understand on what" in formal writing. Opt for clearer alternatives like "understand the basis of", "understand the reason for", or "under what circumstances" to improve readability and grammatical correctness.
Common error
A common error is using "on what" when a more direct preposition or conjunction is needed. Instead of saying "understand on what principle", try "understand the principle" or "understand what principle" to avoid an awkward phrasing.
Source & Trust
84%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "understand on what" functions as an attempt to specify the grounds, reasons, or conditions for understanding something. Ludwig AI indicates that this phrase is not standard English, and examples show varied usage across different sources, sometimes appearing awkward.
Frequent in
News & Media
57%
Science
29%
Encyclopedias
14%
Less common in
Academia
0%
Formal & Business
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "understand on what" is generally considered grammatically incorrect in standard English, as per Ludwig AI. While it appears in various sources, including news, science, and encyclopedias, its usage is uncommon and often sounds awkward. For clearer and more effective communication, it is recommended to use alternatives like "understand the basis of", "understand the reason for", or "under what circumstances". These alternatives provide better grammatical structure and enhance readability, avoiding the awkwardness associated with the phrase "understand on what".
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
understand the basis of
Replaces "on what" with "the basis of", providing a clearer grammatical structure and emphasizing the foundation for understanding.
understand the reason for
Focuses on understanding the cause or rationale behind something, replacing "on what" with "the reason for" for improved clarity.
understand under what circumstances
Specifies that understanding is related to the conditions or situations in which something occurs, replacing "on what" with a more explicit phrase.
comprehend the rationale behind
Uses "rationale" to emphasize the logical reasons for understanding, offering a more formal alternative.
grasp the principles of
Shifts the focus to understanding fundamental concepts or rules, replacing "on what" with a broader term.
appreciate the grounds for
Emphasizes recognizing and valuing the justifications for something, providing a slightly different nuance.
perceive the justification for
Highlights the ability to see and understand the reasons or evidence supporting something.
fathom the logic of
Implies a deeper understanding of the reasoning or coherence behind something, suggesting a more profound comprehension.
decipher the motives for
Concentrates on understanding the underlying intentions or motivations, focusing on the reasons behind actions or decisions.
discern the cause of
Focuses on identifying and understanding the origin or reason for something, emphasizing the causal relationship.
FAQs
What are some alternatives to "understand on what"?
Instead of "understand on what", you can use phrases like "understand the basis of", "understand the reason for", or "under what circumstances" for better clarity and grammatical correctness. You could also use "comprehend the rationale behind", which is a more formal alternative.
Is "understand on what" grammatically correct?
The phrase "understand on what" is not considered grammatically correct in standard English. It's better to rephrase it for clarity and accuracy, using options like "understand what" or "understand the basis of".
How can I improve my sentence using "understand on what"?
To improve your sentence, replace "understand on what" with a more direct and grammatically sound phrase. For example, instead of "I need to understand on what basis you made your decision", say "I need to understand the basis on which you made your decision" or "I need to "understand the reason for" your decision".
What's the difference between "understand on what" and "understand what"?
"Understand what" is a direct and grammatically correct way to ask about the content or nature of something being understood. "Understand on what" is less common and often sounds awkward. "Understand what" focuses on the information, while "understand on what" attempts to specify the basis or condition, but does so in a grammatically weak way. It is preferable to use "understand the basis of" instead.
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
84%
Authority and reliability
2.8/5
Expert rating
Real-world application tested